The default apps on a mobile platform like Android are familiar targets for replacement, especially for developers concerned about security. But while messaging and voice apps (which can be replaced by Signal and Ostel, for instance) may be the best known examples, the non-profit Guardian Project has taken up the cause of improving the security features of the camera app. Its latest such project is ProofMode, an app to let users take photos and videos that can be verified as authentic by third parties. 查看全文>>