So I just got my FlexMt a little under a month ago, but today I noticed that the HF side of it was not functioning as usual.
The first sign was that when scanning with the TagInfo app, it didn’t seem to register any card was there. I tested it to make sure it wasn’t just my phone, but it could register other HF tags like the little blue pucks I have or other 13.56 MHz cards. The interesting thing is that both lights still light up when being close to the NFC antenna on my Pixel 4 XL. I was also able to easily scan the NeXT in my right hand.
I tried reading the card through my ProxMark3Easy, but no dice. The Easy has been known to be a little temperamental, but I tested it by scanning a bunch of LF and HF tags perfectly. I couldn’t get a read on my NeXT, but I’ve only managed 1 good read of it with the entire time I’ve had the PM3Easy. I also checked the “hw tune” command and everything turned out ok. Again, when doing a hf scan, the lights lit up and blinked, but no dice on an actual card read.
Finally, I tried it on my door lock reader, which traditionally responds to all HF tags (although only unlocks with my unclonable Ultralight EV1). No response from the door reader at all. The fact it didn’t turn on the lights isn’t so jarring as even when up against my PM3 easy, they only glow a little, so I can imagine it would be really difficult to do when not right up against the reader. I tested the door reader with the little blue puck HF’s I had around and was able to get a read from as far away as 1cm.
I can’t recall hitting it super hard or anything and the LF bit of it is still being read through my PM3 and other readers to get into my building at its regular far-ish distance. It seems that the HF has just gone on the fritz. The only other dicey thing I did was apply some magnet tape to some cupboards yesterday, but I ran some over a blue puck and it still was read just fine. I have no clue what’s up and would love some guidance.
The implant in question after 32 days (apologies for the dry skin):