No writing the code of the game itself before the jam starts. When uploading, you have to upload an image of the QR code of the game along with the source code.
Create and download your personal QR codes for free! Scan the QR codes with your smartphone to visit websites, dial phone numbers, text messages or tweets.
Anyone in a Jam can control what's playing on the speaker. Tap on the invitation link sent to you by your friend, or scan the QR code, or bring your phones ...
I want to be able to print a QR code so that the students can scan it and join a jam so that they can queue up songs. Is there someway I can do this so that ...