NFC ReTag is a free and open source NFC tool that can be used as an automated tool for your Android device. The app has been developed to support all kinds of NFC tags, from normal hotel keycards and access badges to price tags, lift cards, key fobs, and even NFC tags that can be found in some smartphones. You can use it to set up a schedule, for example, to turn on the wifi when you arrive at your hotel and turn it off when you leave. It can also be used to run any other NFC-enabled app. The app will automatically open and run the app, and will then remember the results. If the tag is not recognized, you will be prompted to do it manually.