If you store a message on an NFC tag everybody who scans the tag can read what you wrote. With NFC encode you can encode secret messages like usernames passwords credit card pin numbers and more on an NFC tag.

You can choose between 2 encoding algorithms. With the simple algorithm (cipher) only the person that knows the password can decode the message. If you choose the strong algorithm (encryption) you will only be able to read the tag data with the same phone that encoded the message using a unique password.

You can stick an NFC tag on your work desk and scan it when you need the data. Or save a PIN number or other information on a tag that you stick in your wallet.