1922 QR Code Scanner is a free and ad-free app developed by Taiwan Innovation App. It is specially designed for Taiwan's contact tracing system to help curb the spread of COVID-19. The app has a user-friendly interface with large fonts that make it easy for the elderly to use.

One of the app's main features is its quick and easy scanning process. The app can only scan 1922 QR codes, which helps prevent the use of fake codes. The volume keys can be used to turn on and off the flashlight for better scanning visibility. The app is designed to accomplish the contact tracing process in just two simple steps - scan and send the SMS. The SMS sending is also free of charge.

Developed in Taiwan, the app does not collect any personal information and does not require an internet connection to function, ensuring the user's privacy and security.