Review on HECERE Ceramics Rewrite 13 56MHZ 20MM: Advanced 13 56MHz Ceramics for Enhanced Performance by Carl Morgan

This ring makes a great proxy card! All the negative reviews are from people who didn't know what they were buying. If you know what system you're running, and you have the right reader/writer and ring, it will work like a champ! I programmed mine with the recommended reader/writer and it's amazing. No more rummaging through your wallet to access all the doors at work. No more unpacking to find my card and opening the door, then fumbling around to put it all back together while holding the door open. Just do your research and make sure you know which ring and scribe to order!