It's a Tasker plugin, it requires Tasker 4. 7. In order to read or write an NFC tag, both NFC sensor and the screen must be ON. Create an event using Tasker Event-Plugin NFC for Tasker. You can create events filtering according tag id. You can write NFC tags using a Tasker action. Note: if your tag is not detected, you can try to format it with the plug. Then try again.