This app lets users read hidden messages in a fun, game-like experience.

How to set up a message:
1.Visit any QR code generator site and create a QR code that contains your message.

(one of sites : https://www.qr-code-generator.com/)

2.Share the QR code with your recipients.

How to read the message using the app:
1.Open the app and scan the QR code to start the game.
2.Explore the game world and find the letterbox on the hill to read your message.