You can only add NFC to an item that has been added to your inventory.
Adding an NFC tag to an item in the Mobile app
Tap “+ Add NFC” to open your phone’s NFC Scanner
Hold the NFC Tag against your phone’s NFC Sweet Spot. Give it a few moments. If you’re not sure where your phone’s NFC antenna is, check out this blog.
If you have been successful, you will see an “NFC Added” banner appear
Your item is now connected to the NFC tag
Adding an NFC tag to an item in the Web-based app
You will need a USB NFC Reader to use NFC Tags with the Scannable web-app
Head to the Inventory page of the Scannable web-app
Tap “+ Add NFC”. You should see the message “Ready for NFC reader”
Hold the NFC Tag against the NFC Reader. Give it a few moments. We find toward the bottom of the reader in the middle to be a good place to hold your tag
If you have been successful, you will see an “NFC Added” banner appear in the bottom left corner, and “NFC Added” will appear in the NFC field
Your item is now connected to the NFC tag