The xEM I had implanted into my right hand some years ago appears to be unresponsive, as evidenced by an inability to read on any 125 KHz access control readers, a ProxMark 3, or a Flipper Zero.
I’m not asking for a replacement, because this is actually my second xEM. The first one rejected, so I got that removed and I’m on the second one. I’m just reporting the issue. I’m considering getting a NExT. Are those considered pretty stable?