50 PCS NFC Tags Ntag215 Cards Blank NFC Coins Rewritable NFC 215 Tag Round NFC Chip 25mm, Compatible with Tagmo and NFC-Enabled Mobile Phones and Devices (No Adhesive)

These are perfect. Bought 2 packs and all work just fine. I check everyone before putting in my 3D print. Easy to write, perfect size (25mm) is what I am using and work perfectly. Will buy again.

They don't look it, but they're surprisingly durable, easy to use, and their thin profile makes them easy to tuck away. Solid buy!

These read and write no problem if you use an app in the iPhone however once written they will not read other than in the application that wrote them I can’t get them to read on any iPhone. These do however work perfectly on an android type phone to automatically read. I recently was using another app that uses automation and it was able to write and rea these, once written they do read automatically with iPhones so it has to be by the looks the way it is written that make these work with an iPhone. I can’t complain about the price though you get a lot for your purchase. Only giving 4 stars due to the strange behavior on iPhones otherwise would give 5

Solid NFC tags. Worked great for the 3D printed project I was working on.

People complain about these being small, but they fit nicely when stacked up inside of a recycled prescription bottle. I've used 18 of the coins so far, and none of them have been defective. I'm definitely going to use more of them instead of using Nook Miles. Some players use hundreds of tickets to island hop in hopes of finding at least one villager they want, and I rather spend my free time relaxing with cute villagers than burning through miles and loading screens.

Use them to tag boxes for contents info

Reordered 2x

After trying these out for 2-3hrs I realized that not all of them work. I had to continuously check the tag first, before trying to use them in any way. Overall, for $7 it wasn't bad, but I'll probably spend more next time so they all work.

These have worked out well for me, haven’t had a dud yet.

They works very good with amiibos

it kind of works, but it often takes a few tries for the phone to respond to it. I tried different phone and researched this a bit and the issue seems to be related to these rfid tags