Everyone has to be in the same place? I can just hand my phone to someone else and let them see something, no data exchange or app required.
Alternatively, the discussion below seems to point out that screenshot blocking is ineffective. If all devices are in the same room, a swift punch to the mouth and taking someone else's device could remove that possibility.
But why would I want to take a photo that needs to be "unlocked"? My phone already has a camera on it, and I can already not share photos. I genuinely don't understand what this app is doing.
Alternatively, the discussion below seems to point out that screenshot blocking is ineffective. If all devices are in the same room, a swift punch to the mouth and taking someone else's device could remove that possibility.
It cuts both ways.