50pcs NFC Cards NFC Tags Ntag215 NFC chip NFC 215 tag rewritable NFC Coin Cards，RFID Stickers Compatible with Tagmo and NFC Enabled Mobile Phones and Devices, Round (25 mm/ 1 Inch)

Easy to use. worked great. I added them to several things for business card style data. Easy to program. Good pricing.

These sturdy little disks are great for cards as is.If you have trouble reading them with your iPhone, try the upper left corner on the screen side of the phone. I had to go to the notifications screen to read tags with the latest iPhone, there is not a pop-up if in an app. Pixel 6a middle al of the back of the phone works great.I've also noticed armored cases sometimes interfere, as well as any credit card wallet card with nfc enabled cards in the case. Try removing the cards before scanning.If you want to keep the wallet case, try using a cut rectangle of coffee vacuum bag behind the credit cards to reduce Rf interference.

These tags seem to work well. Not that it's a big deal but the memory of these (at least the batch I got) is 492 bytes not 504 bytes. They also have a hard plastic case, so they can't be bent to fit into curved spaces. I've used others that were soft & formable. Just so you know if interested. Overall I'm pretty happy with the purchase.

Solid plastic, read/write very easily with an nfc enabled phone. Great for making your own amiibos

Excelente tamaño para hacer llaveros con NFC

These work to make Nintendo Switch Amiibos! Figure out the rest on your own... But 100% these work if you need them for your Nintendo Switch. Each can be written to ONLY ONCE.

Works as expected.Be aware that do not work with many Android phones. Works with all iPhones so far from.Do not stick with clubber like I did at the back of your iPhone or else it may not work as expected (I did that thinking I could put it close to other iPhones for networking purposes) but that didn’t work. The nfc needs to be close other phone so it works and has to be where your iPhone camera is located.Tips: make sure you add some stickers to your nfc so when networking it is easy to recognize which nfc tag is about.

These are NOT stickers. While they seem to be a good quality. DO NOT expect to 'stick' them anywhere. There is no adhesive. These are just discs that you will have to come up with something else. Other reviewers have pointed this out (I see it now). For how I am going to use them I can use tape, but this might really mess someone else up. They need to change the product title!!I have not programmed one yet to verify if they work, etc but will update if they do not.