Snapchat, with all of its privacy/security flaws, does one thing quite well: It does a great job at revealing how when users are left to their own wiles, they almost inevitably end up taking rather incriminating or otherwise unbecoming pictures with their cell phone cameras—and that’s not even getting to the whole annoying ‘selfie’ phenomenon.
So what do you do when you still wish to take “interesting” pictures, but don’t exactly want them popping up on your frenemies’ social media feeds? You could always lock your phone and not let anyone play with it. You’d also have to make sure you have USB debugging disabled, your bootloader locked, and it’d probably be a good idea to simply prevent others from ever even touching your device. However, there are often legitimate reasons why others will need to borrow your phone, and photo privacy is the last thing you should be worrying about when your friend is calling an ambulance after a planking incident.
XDA Forum Member fenritz has an application to help keep those compromising candids under your own control. Safe Camera, does as its name implies and secures your photos taken through the app. Unlike other encryption-enabled programs, Safe Camera never even temporarily saves an unencrypted copy to your SD card, so there’s no way that it can be restored without a considerable amount of effort. New shots are all encrypted, and in order to view them in the built-in gallery, you must enter your password. Sharing is also possible, but you must either create an alternate password for the image to be shared or simply give your recipient your password. At that point, the photos can be viewed in their Safe Camera application.
It is important to note that while the application claims to use AES-256 with PBKDF#2 algorithm using more than 2000 iterations, there is no way to know with absolute certainty what is actually being done in this closed source application. That said, if you’re trying to hide from friends and relatives rather than government agencies (something we don’t particularly recommend), this is highly likely more than enough for you.