Create a Mobile Website

we need website for data entry. the site basically will contain two thing: 1-page to enter data and click check if it found correspondence value it will show it , if not it will add it to database to enter it values by Authorized users. (it doesn't require authentication to enter data and click check any website visitor can check) 2-Dashboard for Authorized Users where we have 3 Users: A-User A:Enter Data and click check if it's found it will show him the data he have entered is already exist so he have to enter another data that not in database to be stored. B-User B:can do what "User A" do and in addition he can add correspond value to the data that doesn't have correspond value 3-User C: can do what "User B" do and in addition he can approve/reject the assigned value to the data , if he approved it then if somebody searched for the data in page (part 1 ) it will be shown. the users system should keep track of each user , how many data/value/approval he have entered. if you can do this by wordpress (as plugin ,it would be good)