From their description:
"Peekr is a game that puts your photographs on the line. Playing is simple: Trace the pattern that is shown correctly and Peekr will show you a picture captured from another player's camera roll.
If you make a mistake, however, one of YOUR pictures will be RANDOMLY selected for upload! If the picture is too risky or private, you can use a "photo bomb" to keep it safe and private."
I'm too scared to try this.
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