Here is a project that I came across a while back but didn't take much notice because I didn't recognise its importance.
A lot of things like silencing of journalists, protesters, activists and opposition politicians have made this an absolute must have app.
Obscuracam is a photo and video app for Android that keeps identifying traceable information (GPS location data and phone make & model) private by giving you the ability to remove it.
The app also gives you the ability to blur faces of people who would rather not be in the picture such as activists, children or whistle blowers.
Download ObscuraCam from the Google Play Store OR download here :https://guardianproject.info/apps/obscuracam/
If you are a coder, please take a look and see if you can make it better.
Do reviews of the code, publish the reviews (even steemit!)