How to promote your apps? To enter the URL by hand? It is so painful. Read the QR code? To start the QR code reader is a pain. But, the Application Launcher tag can be scan only by induction to Play Market! If the application is already installed if that app will start automatically.
Seeing is believing! Please try first! If you will buy the NFC tag. Use this application to check required storage before. In general, NFC tag only has a very small storage.

This application required Android version over 4.0.3 . and Tag data read required Android version over 4.0 .