"I'm blown away that I can write data to a little chip and then access that using a phone or tablet. I've embedded NFC tags into all sorts of things, from documents to business cards to 3D-printed objects. And it's easy! What you'll need You need two things: NFC tags: These come in all sorts of shapes and sizes, from to to ."
"You have the tags, the app is installed, and you're ready to write your first tag. To write a tag that opens a webpage, tap Write, then Add a record, tap URL/URI, enter the address of the web page you want to open in the box, and tap OK. Now, to write to the tag: tap Write, then bring the tag to the back of the smartphone. It should detect the tag and write the data to it. It's that easy!"
NFC allows storing data on small chips that smartphones and tablets can read. NFC tags can be embedded into documents, business cards, and 3D-printed objects. Recommended tags are NTAG215-compatible for 504 bytes of memory and long data-retention and rewrite cycles; some cheaper tags provide only 137 bytes. A reader/writer app like NFC Tools is used to program tags. To write a URL record, add a URL/URI record in the app and touch the tag to the back of the phone to write. Test by exiting the app and tapping the tag to trigger the URL. Protect tags since they are rewritable to avoid tampering.
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