NFC Tag Router · Buying tags

Which NFC tags should I buy?

Short version: look for NTAG213 in the listing.

NFC Tag Router writes a short link to each tag, and every iPhone can read it. Most NFC stickers, cards and keychains sold online work, as long as they use one of the chips below. The chip type is almost always in the product title or description.

Buy these

• NTAG213 (recommended). The most common and least expensive chip, with plenty of room for a tag link.
• NTAG215 or NTAG216. These also work perfectly; they just have more memory than you need.

All three support NFC Tag Router's sticker lock, which password-protects a tag so nobody else can reprogram it.

Avoid these

• MIFARE Classic (often listed as "MIFARE 1K", "S50" or "13.56 MHz RFID"). iPhones can't write to them.
• 125 kHz or "EM4100" / "T5577" tags. These are access-control fobs, not NFC.
• Tags sold as "pre-programmed", "read-only" or "locked". They can't be written with your link.

Pick the right style

• Metal surfaces (doors, signs, equipment): choose "anti-metal" or "on-metal" stickers. Regular stickers won't read on metal.
• Outdoors or high-touch spots: use waterproof PVC or epoxy tags, or cards.
• Size: about 25 mm (1") or larger reads more easily than tiny tags.
• Printed or blank: either works. Printing "Tap here" with a phone icon helps visitors know what to do.

Writing and placing tags

• In the app, open a tag and choose Write to NFC Tag, then hold the top edge of your iPhone against the sticker until it confirms.
• You only write a tag once. Change where it sends people anytime by switching its live button, with no rewriting.
• Place tags where a phone can rest easily, at about chest height, and away from metal edges and thick glass.
• Visitors don't need the app: any iPhone (XS or later) or NFC-enabled Android phone opens the link with a tap.

Questions?

Email sprataitechlabs@gmail.com and include a link to the tags you're considering. We're happy to check.