Computer scientists at Duke University have built a prototype of a new system, called YouProve, that tracks changes in images or audio captured with mobile phones.
YouProve is an add-on to the Android operating system that records significant alterations of media files, like adding content or pixelizing a license plate. It could be useful for someone participating in a rally who wants to preserve someone’s anonymity by blurring his face before publishing a photo on a site like CNN iReport.
YouProve creates a “fidelity certificate” detailing how the image has been altered. It posts that certificate along with the edited image online. Read more here
