We have developed this technology. Our technology is licensed and is currently being used by elearning customers to distribute secured eleaning video lectures on micro sd cards for playback on Android phones and tablets. Technology deters piracy like copying, ripping, file sharing, torrenting etc. and has features like limit the number of devices on which content can be watched, expiry date. Technology does not use temp files and can play any size of video seamlessly e.g. a 4 GB video can be played on a Android phone/tablet with 1 GB RAM. Technology is licensed (no source code), with an initial licensee fee and a fee per sd card recorded. Let us know of your interest .