Easy! No need to install anything. Phone (android or iPhone/iPad) and browser (chrome or safari) are all you need.

QR-Code Games 
Scan the QR-codes to play the game or find the solution.

• iPhone/iPad (iOS 11+): Open the camera and point it towards the QR-Code
• Android: Use our QR Scanner at posterini.com/qr or any of the free QR-code scanning apps at the Android Store.

Augmented Reality Games

• Scanning the QR-code will open a posterini page which will activate the experience when you point your phone to the posterini design.
• Make sure  to have your web browser (chrome/safari) and OS updated  to the latest versions.
• For best results, light conditions should be even. Alsos avoid excessive wrinkles in the fabric of the t-shirt.