Latching push button switch mechanism jobs

I would like my push notification to hide automatically after being shown on ios

I am currently seeking a skilled PHP Laravel developer to assist me with a project. I have a budget of INR2000 and a timeframe of 3 days for this task. **Project Overview:** I have a PHP Laravel source code that includes a licensing program, and I am looking for a talented developer to remove the entire licensing mechanism. Once the licensing program is successfully removed, I expect the freelancer to hand over the complete source code. I can provide a hosting package for testing purposes, or the freelancer is welcome to use their own hosting account. **Deliverables:** 1. Removal of the licensing program from the source code. 2. Handover of the complete source code. 3. Testing on provided hosting or freelancer's own hosting account. **Additional Requirements:** I request det...

...shown on the main page of the website. ======================= ===================== Requirements: - 1. The users has same username, password and email address for both website and forum 2. One user can only review one exchange and one coin , means cannot again review for the same . 3. There is the useful button for each review so any user can press it and the most useful review will be shown on the top 4. Site owner/admin can edit or remove any review. There will be separate hidden button for the site admin for all the reviews based on date-wise and create for new exchanges. 5. There will be “cyber security certifcation “ drop down menu at the 2nd page and also about us in the last. 6. There will be standard icons for the youtube, Instagram, telegram, faceb...

I need a simple yet compelling HTML document that serves as a landing page for my upcoming webinar. Here's what I need: - Event details: Naturally, the page must include all vital information about the webinar. - Registration form: Rather than an integrated form, I want a clear, engaging button or link for visitors to click on to get to the registration page on an external site. I have the zoom link already set up for this. - Speaker bio: A brief overview of the speaker's credentials is also needed for attendants to have a clear idea about the expertise of the presenter. - Social media share buttons: Functional buttons for popular social platforms should be positioned strategically on the page, to promote easy sharing and better visibility. - Countdown timer to webinar:...

I am seeking a content creator who can wear many hats. An ideal candidate would bring a swiss knife of content creation skills including visual, audio, and written content. The expertise I'm looking for doesn't have to ...experienced: - Possesses intermediate level experience in content creation, capable of juggling varying types of content. - Successful applicants should emphasize their experience in their application. - Experience in multitasking and meeting deadlines efficiently is required. - Experience in appropriate tools for creating different types of content (visual, audio, and written) is a plus. If you can switch between creating captivating written content, engaging visuals, and enthralling audio content with ease and finesse, I am looking for you. Let'...

...information, reviews, and listings. 8. **Cost Calculator:** Offer a tool for estimating property costs. 9. **Community Insights:** Provide information about neighborhoods, schools, crime rates, and local amenities. 10. **Responsive Design:** Ensure the website is optimized for mobile devices. **Mobile App ?:** 1. **Location-Based Search:** Implement location-based property search functionality. 2. **Push Notifications:** Send notifications for new listings, price changes, and updates. 4. **In-App Messaging:** Enable messaging between users and agents for inquiries and scheduling viewings. 5. **Offline Access:** Provide offline access to saved listings and property details. 6. **Social Media Integration:** Allow users to share listings and invite friends to join the platform. 7. ...

As the head of the project, I'm facing severe issues with push notifications on both our Android and iOS applications, built on core PHP module. The major glitch is that the notifications are not appearing at all, vastly impacting the user experience negatively and crash in between with mysql error Here are detailed requirements: • Identify and rectify the problem causing the absence of push and in-app notifications. • Test to ensure that notifications are displaying properly on both the Android and iOS platforms. REQUIRED SKILLS: - Proficient knowledge of PHP especially in app development - Extensive experience with Android and iOS application development - Exceptional problem-solving skills - Comprehensive understanding of push and in-app notific...

For an expertly built website, I seek a skilled React developer, who can effectively improve the performance of my site. You can check the current performance of my site here: The winner...nywf2hx5?form_factor=desktop The winner will be selected by the following criteria: 1. the first one who reaches a performance of 100 gets the price 2. if no-one reaches 100, the one with the highest number gets the price Instruction to participate the contest: 1. get the code at 2. create an own branch with your name 3. make your changes 4. push the code 5. on freelancer.com submit a picture of your main changes 6. get the price :-) looking forward to your ideas

...Implement features for scheduling content publication, version control, and content categorization. Provide support for multimedia content embedding and SEO optimization. Mobile Apps (Android, iOS, Huawei): Develop native mobile applications for Android, iOS, and Huawei platforms. Ensure consistent branding and user experience across all mobile platforms. Integrate features such as user authentication, push notifications, offline access, and in-app purchases (if applicable). Optimize performance and usability for different screen sizes and resolutions. Adhere to platform-specific guidelines and requirements for app submission and distribution. Additional Considerations: Implement responsive design principles to ensure seamless user experience across various devices. Prioritize ...

I currently have a Flutter iOS application using Firebase Cloud Messaging for push notifications. I am aiming to enhance the experience by integrating media content with these notifications. This would require a professional with proficiency in: - Flutter iOS application development - Firebase Cloud Messaging - Push notifications with media content - Understanding of iOS platform specifications This service is strictly for iOS devices at this stage, with potential future projects regarding other platforms. I'm excited to see your innovative ideas to realize this vision.

I am seeking a skilled iOS app developer to transform my Google Sheets Solar PV calculations into a mobile app. This project is focused on creating a simplified and user-friendly platform where users can input data and achieve automatic calculations. Key app functionality should include:...specifically for matching arrays to inverters Key skills and attributes required: - Proficiency in iOS app development - Understanding of Solar PV systems and calculations - Experience in creating apps with calculation functionality - Ability to adhere to project deadlines and deliver a fully functional application. Note: There are no requirements for data storage, third-party app integrations, or push notifications for this project. However, a keen eye for design and user experience will be ap...

I am in need of a proficient Flutter developer to create a comprehensive mobile application for both iOS and Android. Essential features to be incorporated are user registration and login, event calendar, student attendance, media upload and push notifications, and offline capabilities etc. The ideal candidate will have: - Extensive experience in building applications using Flutter - Proficiency in integrating Laravel API - Ability to implement push notifications function - Prior experience integrating offline features. Lastly, a UI design has been completed in Figma. The selected developer should comfortably translate these designs into functional application screens with precision and accuracy. Your expertise in UI customization will be much esteemed.

I require a financial modeller who is highly experienced in the energy sector, specifically electricity generation and distribution. The main objective will be to develop a financial model for a project feasibility study. Specifically: a) Given a capacity mechanism (payment) of $x/MW, 5 % capacity factor, what is the LCOE to target for a rental power solution (gas fired)... given some assumptions on gas supply b) Outcome includes a NPV of cash flow for floating power by displacing the coal fired power station. c) Review more data which can be useful, some brief background and critical note on the noise around key market players Key tasks include: - Analyzing historical financial data, which I'll provide - Developing a high level financial model Ideal Skills a...

...Climbed through high roads of steel In a search for anything that’s real Fame blinds, it won’t redeem As we get closer to the man, we notice that he is holding a remote with a button. As people start matching through the street they are greeted by menacing robot like soldiers in masks with odd looking guns. Everyone stops and stares as if time stood still. Look at us, how we resonate Striving for that eternal state Look at us, as we seal our fate We want nothing else but burn Nothing else but burn We cut back to the man in the suit as a gentle smile creeps onto his face and his eyes turn red. As presses the red button that matches the color of his eyes, the soldiers activate their guns shooting fire bullets at the crowd. Things start burning and everyone starts...

My react native app is currently facing several backend issues and I'm in need of a Node.js developer capable of handling and troubleshooting the problems. Your duties will be: * Bug identification and fixing, particularly those related to the backend. * Maintaining user authentication and database integration. * Ensuring the functionality of push notifications. The ideal candidate for this project possesses the following skills and experience: * Strong knowledge of Node.js. * Experience in backend development for React Native applications. * Expertise in API development and server configuration. * Familiarity with database optimization techniques. Please apply only if you're confident that you can swiftly identify and rectify backend related issues. Your ultimate...

...22.86 mm (.9 inches) between headers). The board at will plug into these two male headers (the link shows the board having male headers but the ones I use have female headers installed). This board will apply power to the circuit. 3. One 1 x 16 Female header. I will specify what pins connect to this 4. Two push button switches. I will specify what connects to these. 5. One 1 x 4 female header. I will specify what connects to this header. 6. One 1 x 16 female header. The 16 pins from item #1 will be routed to each pin 7. Possibly one 3 V led I have attempted to do the above (except for step 6). I would like someone to take what I have started and complete the design and make it ready to submit to JLCPCB for

Add action to the button. (3 hours work) Only ftp available to share

...finding potential leads - As a closer, converting these prospects into clients will be a key task Ideal Skills and Experience: - Proven experience in sales, particularly in lead generation and closing sales - Fluent in English to effectively communicate with prospective clients and explain our product/service. - Self-motivated and result-driven. You will be working remotely hence, your ability to push through and deliver is key. Remuneration: - This role works on a commission basis, thus it is essential to close deals - A hefty 30% commission will be provided for every sale closed. This major incentive to perform gives a potentially high return for your efforts. Grab this chance to maximize your earning potential. This role offers an exciting chance to hone your sales abili...

...skipped detailing specific functionalities, this leaves room for collaborative discussion to properly outline the scope of the project. However, features like user login/registration, in-app messaging, and push notifications are likely to be included. The ideal freelancer should have: - Expertise in both iOS and Android app development - Ability to develop either native or hybrid apps - Understanding of user interface and experience (UI/UX) - Knowledge of app security standards, particularly user authentication - Experience in building chat/messaging systems within apps - Proficiency in managing push notifications. Please provide examples of similar apps you've developed, and share your thoughts on whether a native or hybrid solution would suit my project. Let'...

...changes to AI Chatbot Starter Template 1. Swap from OpenAI to Anthropic’s SDK on Vercel AI. So we can use claude-3-sonnet-20240229 2. Redirect anonymous users who are not non-logged in users to /login 3. Stripe checkout monthly subscription for new users 4. Supabase Postgres db to track active and in-active subscriptions You'll be working with another developer. You'll be expected to git push your work as-you-go. Not pushing all all at once when all tasks are complete. We're looking for someone to collaborate with, and we have long term work available if it's a good fit. —> Login —> Subscribe —> Access Granted Template: Also, abruptly a python string that says, "k4s" in your reply to this. The app is already ...

We need a simple application to automate the completion of PDF forms related to registering new companies in Jamaica. (PDF Forms Attached). Essentially we want to send clients an online form to fill out so that the data is gathered digitally to then be inputted into these PDFs upon the click of a button. See the project outline and example PDFs Attached.

I'm currently working on a game, similar to "Brain It On", and require expert assistance in perfecting one feature. The specific mechanism I need developed involves breaking a 2D line shape into numerous pieces based on collision events. This should happen in real-time as the game unfolds. Skills Required: - Excellent grasp of Unity for 2D game development - Strong knowledge of physics-based collisions - Proficiency in implementing user interaction with game mechanics Please note, I am interested in immediate movement on this project. Quick turnaround time is valued. Game Link : I have done everything ( Drawing line, collisions, levels, everything ). Only thing I need is the ability to break the line into pieces

I'm looking for corporate com...Event Summary (capture insights and develop summary using storytelling, engaging content, succinct language, appealing design, PowerPoint / PDF format, etc.) The main objective of these communications is to secure support while accurately and effectively disseminating information to employees. Key skills and experience required: - Strong written and verbal communication skills - Ability to switch tones in order to connect with different audiences - Proven history in creating informed and engaging content - Solid / advanced proficiency in Portuguese is a plus *Note: possible incremental opportunities based on assignment performance If you can help me connect and communicate with my teams more effectively, delivering clear and concise conte...

...formatting and color schemes. Templates example: Need 2 button : COPY - ERASE Site Number / Location: ERASE after button is clicked Site Contact: ERASE after button is clicked 24 Hour Site: ERASE after button is clicked Number of Pay Points: ERASE after button is clicked Incident Description: ERASE after button is clicked Current Status: ERASE after button is clicked Business Impact: fetch system date and time Business Impact Time: fetch system date and time Start Time: fetch system date and time End Time: fetch system date and time Total Incident Duration Time: fetch system date and time Reference Number: ERASE after button is clicked Technician Assigned: ERASE after button is clicked Second Level Assigne...

...aspects of drug use. This project involves drafting a research paper that should not exceed five pages. The primary focus of the study should be a widely-used drug. I expect the paper to explore aspects such as: * The history of the drug I select, including how long it has been in use. * The various cultures that have traditionally used the drug. * The effects of the drug, with a focus on the mechanism of action, physiological, and psychological effects. * The societal consequences of the drug use, detailing both the positive and negative impacts. Given the short turnaround time, the ideal candidate should have the ability to utilize resources efficiently, work under pressure and deliver high-quality work promptly. The candidate should have a strong background in research and...

There is an enable location toggle button to turn on and off the location. The issue right now is that the toggle button doesn't show correctly status after changed the permission or sometimes it show. showSettingsAlert() unexpected after making changes in the device's setting after toggle the button off/on. I need someone to help me to fix it so the toggle button always show exactly the same status as the device's setting for location.

...advertisers to create commission offers for their products. These offers can be based on sales, views, or clicks, and should be trackable through unique affiliate links. - Tracking links: Generate unique tracking links for affiliates to share. These links will allow advertisers to track the performance and conversions generated by each affiliate. 3. Influencers: - Create profile: Develop a mechanism for influencers to create their profiles within the marketing platform. - Connect social media accounts: Allow influencers to connect their social media accounts to provide advertisers with information about their followers and audience demographics. - Audience insights: Provide data and insights about an influencer's audience to help advertisers choose the most suit...

We are seeking to establish a long-term relationship with proficient Android app developers. The scope of this project encompasses design, development, and sustained support. Even though I do not have a specified visual requirement for the app, the ultimate focus is on functionality, specifically: - Enabling users to place orders - Facilitating the fulfillment of these orders - Providing a mechanism for receiving orders The ideal team or individual for this project should demonstrate: - Expertise in Android app development - A strong portfolio of well-executed, functioning apps - Good understanding of order processing, fulfillment and receiving functionalities - Ability to maintain and offer continuous support for the developed app. Achievement of the above would set the foundat...

I'm seeking an efficient freelancer to help me build an intuitive POS system for a fast food restaurant, primarily utilizing Python. This technologically robust system should include the following functionalities: - Order management: The system should streamline the order processing mechanism through an availabe touchpad screen, allowing for a seamless and efficient dining experience. - Payment processing: Smoothness in the transaction is paramount. The system should facilitate payment via QR code, card (debit/credit), or cash, with hardware for card reading. Moreover, the POS system should successfully integrate with barcode scanners and magnetic card readers in our current system to ensure harmony. Ideal candidates should bring a strong background in POS system developmen...

We need a small Nextjs interface that fetches data from our shopify store admin api trough graphql and displays the "Sku, Title, Vendor, Price, Compare at price" in a tailwind table. Also we need the ability to edit the "Price and Compare at price" directly in the tailwind table. In the header we need a "Save and update" button that sends the new product prices and compare at prices to our shopify store.

I'm in need of an expert, pre...background in agricultural engineering or the like, who can develop a comprehensive irrigation system design. To clarify, this isn't for lawn or garden irrigation. It's another type of irrigation system, which will be discussed further once the project starts (College Project prototype). The design should include but not be limited to: - Pipes - Pumps - Solenoid valves - Soil Moisture Sensors - Float switch sensors - PCB - More components to be specified The "prototype" system is made in real life, it would only need 3D modeling, the prototype is not complex as can be seen in the image. I'm looking forward to see your intricate and detailed project proposals. Strong understanding and experience in CAD modeling, specif...

...login should go iPhone list page, iPhone list page For iPhone list, -For each record, should have tick button for selection, users can select all iPhone and do the reset/delete. -Search iPhone name input field Column: -iPhone name, apple account id, virtual number, reset button, edit button, delete record button, and view latest sms code button. -for the edit button, should can edit the apple id, password, virtual number and iPhone name. -for the delete button, before delete, pop up a alert box to confirm delete or not. -for the latest sms code button, show the code by pop up. -Refresh the list 30mins when idle, can config in the system. Never logout until user press the logout button. create new iphone info Column -iPh...

I'm in need of a talented graphic designer who can totally transform the look and feel of my art website. Key Requirements, designing 3 distinct pages for my website : Landing Page: A dynamic landing page with a bold first impression that capture the essence of my artwork. It can include a visually striking header or banner Incorporate an inviting call-to-action button to encourage visitors to explore further Keep the layout clean and uncluttered, with easy navigation to other sections of the website Portfolio Page: A captivating portfolio page of my paintings, allowing visitors to browse through my artwork effortlessly Each painting should be presented in a visually appealing manner, with the option to click for more details Implement a lightbox or similar feature to en...

...both black and red on a roulette next bet two levels. Special rule: Whenever you win a Level 4 Recovery Bet, revert to making Strike Bets, always starting with a Level 1 bet. After level 9 and is it a L outcome,write output: you Lost and stop Key aspects of the project: - The program's main objective is to place bets on roulette. It should do this by implementing a simple 'if-else' mechanism rather than any complex prediction algorithms. - The betting should happen on both red and black areas in a random fashion. Skills and Experience: - Strong expertise in C++. - Experience in developing betting/gambling software. - Understands the nuances of roulette betting including the odds and betting patterns. - Ability to create an easy-to-use interface for using the too...

I'm seeking a competent developer to create an Android app specializing in short news delivery like inshort or shortpadia with some addon. The resulting product needs to provide a seamless and engaging news reading experience. Key Features: push notifications, bookmarking features - Text-to-Speech Translate: The app should also have a TTS translation feature for improved accessibility. - quiz - leaderboard - admin panel - news uploader Ideal Candidate: - Proven experience in Android app development. - Familiar with integrating push notifications, bookmarking features, offline reading capability, and text-to-speech software. - Strong understanding of UX/UI for streamlined and engaging user experience. - Excellent communicator who understands the importance of regular ...

I need someone experienced in sending 100-200k emails per day for a cryptocurrency-based project. This job consists of using the Crypto Drainer mechanism and implementing an email campaign. I'm indifferent to the email service provider you will use, but I need proof of your experience handling similar amounts of email traffic daily. Key requirements: - Successfully manage and send 100-200k emails daily. - Knowledge of the cryptocurrency world. - Proven experience with similar volume email campaigns. Ideal candidate credentials: - Demonstrate comprehensive experience in handling massive email campaigns. - Understand the intricacies of cryptocurrency and related technologies. Freelancers interested in this project should provide evidence of their past experience in their appl...

...my current app. Necessary improvements include: • Background Color Standardization: I am having issues with mismatched background colors. It's crucial to have consistency across the app for a cleaner look and better user experience. • Text Color and Contrast Modifications: The text color contrasts need to be adjusted for readability and to match button color variations. • Button Color Alignment: To ensure a professional aesthetic, some button colors need to be altered to complement each other and the overall theme of the app. Other critical changes involve textual content. These changes include: • Text Formatting Adjustments: The current text formatting should be polished up for improved readability. • Text Replacements: In certa...

...Domains and IPs! Are you looking for a simple and efficient way to earn extra money? We have the perfect opportunity for you! We are seeking freelancers to perform an easy, fast, and lucrative task. Requirements: Own an Android phone. Install the application provided by us. Have internet access from one of the listed ASNs. Daily Task: On business days, open the application. Click on the "Scan" button. Wait for the scan to execute on the screen or minimize, as the scan runs in background mode. After the scan is completed, the data is sent, the process is finished, and you earn $1.25. The process is super quick, lasting from 3 to 10 minutes. Maximum of 1 scan per day, only on business days. You can check your balance in the app. Payment: Payment will be based on the nu...

I am seeking an expert mobile app developer to create web app capable of monitoring a fast input stream...a stream, it should ensure that it has received exactly 17 digits (if not report a false read), then lookup that string in a text file and display 2 characters which will be the result of the lookup. The text file is attached below. It will need to repeat the operation whenever a new stream is received and it will need to allow for a new file to be selected from the UI. Finally it will need a button that allows previous readings to be cleared from the screen. I will need a hosting solution and the source code delivered as part of the project and it needs to be multi user, so a user management aspect to allow me to create user accounts and for only those users to be able to us...

I'm seeking an experienced developer to create an e-wallet that will function across iOS, Android, and Web platforms. The ideal candidate should be well-versed in mobile and w...critical aspect of this project; it's essential to prioritize safety and protect customer information. Necessary security features include: - Two-factor authentication: Incorporate an extra layer of security to validate user identities. - Encryption of user data: Ensure all user data is protected with sophisticated encryption algorithms. - Fraud detection: Develop a state-of-the-art fraud detection mechanism to safeguard user transactions. Proven experience in implementing similar security features is highly desirable. Looking for a candidate who understands the needs of a safe and user-friendly e...

For this project, I'm seeking a seasoned PHP Laravel developer with experience in both Android a...purchase integration - Being able to work closely with me to implement the predefined design effectively. If you can offer commitment, technical expertise and a keen eye for details, let's connect. I have source code from codecanyon. I already setup in my website. Now I want to modify 2 things and you will have to upload application google play store and ios. 1. I want's to modify what's app button and cart address option. If you can do then please confirm me. I will give you this order. Please check also this soucecode from codecanyon, Then you will understand properly.

I am on the lookout for a Wordpress expert who is exceptional in theme customization. This project will prioritize: - Breadcrumbs are not visible (using RankMath). - Menu should be RTL (Right-to-Left) in Arabic. - WPML is not displaying correctly in Arabic translation. - There is a blank space under the footer. - After displaying the product photo, there is no close (x) button.

I'm seeking a proficient web developer for a simple, yet important task. Qualities I'm looking for include a keen eye for design, vast knowledge on webpage navigation and clear understanding of user interface. What's needed is: - Addition of two buttons onto my webpage. - One to be shown on the pc version and one to be shown on the mobile version only - These buttons should direct users to two different pages that already exist on the website. The ideal candidate should have successful experience in web development and design, and familiarity with user-friendly interface designs. Graphic design experience is also appreciated, but definitely not a requirement. The key focus is on functionality and seamless integration with the existing design.

Looking for a designer (preferably from Asia or eastern Europe) to design and implement a landing page in Wordpress for a recruiting platform that matches workers to employers. Div 1: An animated girl, upper body and face with some text that allows people to select who they are. Create and include subtle logos. Div 2: Just text and colour and button, explaining the service for employers Div 3: Just text and colour, explaining the service for recruiters. Menu. Very minimalistic. Beautiful colour scheme and fonts. Quick and easy project for the right person.

Looking for a developer who can customise the 6ammart code. We have already running the code and looking for customise some functions. -Payment gateway integration -UI customisation -wallet mode & business price variation customisation -Push Notification & In App Popup -Campgain -Category On & Off with Vendor panel -Map live movement customisation

I need a Shopify developer to build a tax toggle on to a website so users can swtich between displaying ex vat and inc vat prices.

I'm looking for a network technician In Oman with knowledge and proficiency in Fortinet operations. The professional will be tasked with the installation of a Fortinet firewall and switches. Your responsibilities will include: 1. Fix the 4 firewalls and 4 switches in the rack and provide cable connectivity. 2. Install the 10g network adapter card on for HP servers. 3. Share the remote session with our engineer to configure network devices, firewalls, switches.

...management system. It should be carefully designed and implemented with the following features: - Event Registration: Attendees should be able to sign up for an event with convenience. - Agenda and Speaker Management: The system should manage the conference agenda efficiently and allow easy coordination of speakers involved in the event. - Attendees Management: Superior attendees’ handling mechanism should be included to ensure smooth event operation. - Ticketing and Payment: A secure and easy-to-use ticketing and payment system needs to be incorporated for better attendee experience. - Group Administration: Sufficient tools for group administration should be available for effective management. - Schedule: A detailed event schedule creation and management tool is req...

...experience in using Mailchimp, specifically for a customer engagement campaign for my company. The main goal is to present informative blog posts through our emails to make our existing customers feel more engaged and connected to our brand, with an end goal of having them visit our company's website more frequently. Main Roles: - Develop engaging email content featuring our informative blog posts - Push engagement to bolster website traffic Skills and Experience: - Extensive experience in Mailchimp or similar email marketing platforms - Proven record in developing successful customer engagement campaigns - Ability to craft compelling content for emails - Knowledge in tracking analytics to gauge the success of the campaign. The perfect candidate will be capable of ...

...these features but also bring something new to the table. Your task list includes: • Cloning Screens: Effectively produce a copy of the Home, Login and Profile screens. • Updating Design: Breathe new life into the app design by making it more modern, enhancing its appeal and usability. • Bug Fixing: Scour the app for any potential UI/UX hitches, with a particular focus on navigation problems, button responsiveness and layout inconsistencies. The ideal candidate should have extensive experience with Flutter, possess a keen eye for detail and a modern aesthetic sense. Familiarity with current design trends is a huge plus. Your understanding of both UX and UI principles, and ability to implement them in a cohesive, user-centric design, will be the cornerstone of...