Tetragram - hack the world
Virtually post your picture on the real world
What is Tetragram?
With Tetragram You...
Hack the real world in 3 steps
Scan
Find a QR code on a wall and scan it with Tetragram app
Post
Select a picture and post it with the place information
Show off
Send it to your friend, tell them to see how you hack the real world
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