6 Micro NFC Tags 15.6mm X 6mm - 144 Bytes NTAG213, Compatible with All NFC-Capable Phones

I 3D printed a ring and embedded one of these tags into it. Works great with my cellphone's MFC reader, even under the PLA. Also had success with embedding them into a 3D printed router case (also PLA). Read fine through the 3mm thick wall! Very happy!

These work pretty well, i can read them from my Google Pixel XL through an otterbox case, but they need ro be within roughly 5mm of the case. I think that's pretty acceptable, especially for the size of the tags.What i wanted to do with the tags was to glue them to a ring and use that to unlock my phone. Unfortunately though, the curvature made the tag very difficult to read with the phone case on and had something like a 10% success rate for reading. I have now repurposes them for use elsewhere and I really like them.My first batch had 5/6 dead tags. If you get dead tags just message the company and they will send you out new ones, very great customer service.

Bought to make an rfid ring for a project that would use the common rc522 reader and Arduino. Won't be able to put in a ring because it only reads when it is literally placed on the reader directly

I purchased this item to place in my own bent wood ring and it works as advertised. I've used it in multiple projects and I've had no problems with it.

Not quite sure how to use these.

I am using one of these, glued inside of my ring, to open a Samsung Ezon deadbolt style door lock. Works great!A similar item on adafruit is $20 ea.

Good product

These tags worked as advertised. I used one in an MFC ring without any problems.