ProofMode is light, minimal "reboot" of our full encrypted, verified secure camera app, CameraV (https://guardianproject.info/apps/camerav). Our hope was to create a lightweight, almost invisible utility, that you can run all of the time on your phone, that automatically extra digital proof data to all photos and videos you take. This data can then be easily shared through a "Share Proof" share action, to anyone you choose.

"With ProofMode, we both wanted to simplify the adoption of the tool, and make it nearly invisible to the end-user, while making it the adoption of the tool by organizations painless through simple formats like CSV and known formats like PGP signatures."

More information: https://github.com/guardianproject/proofmode