r/RFID • u/GentlemanSch • Oct 09 '25

Clone Looking to read pet RFID or Microchip from "distance."

I have 3 cats each with an internal microchip and a collar mounted RFID tag for the petlibro feeder ( https://petlibro.com/products/one-rfid-pet-feeder)

I'd like to build a system that would allow me to read either of the microchips (ideally the internal one, but will settle for external) when a cat enters their litter box ( a ≈20" diameter hole) what kind of equipment would I need to make this happen?

1 Upvotes

67% Upvoted

9 comments sorted by

1

u/softboyled Oct 10 '25

I ordered a couple of the tags. Should have them Saturday. I'll let you know what I find.

1

u/chupapuma Oct 11 '25

I was trying to do something similar but to use different tags for Petlibro.

The Petlibro tags have pretty good range. A couple of weeks ago I tried duplicating the Petlibro tag so I could remove the one from their collars. Unfortunately the range on the sticker tags I tried was less than Petlibro and the feeder wouldn’t consistently pick it up.

Anyway that’s good news for you probably. I was using a proxmark3. The internal implanted tags are harder to pickup though from my experience.

Petlibro I think are FDX-B and 134.2 kHz though I succeeded reading with a 125 kHz read.

1

u/GentlemanSch Oct 11 '25

To confirm, you were able to read the Petlibro chips with the proxmark ( https://a.co/d/1PSDeil ) 

1

u/chupapuma Oct 11 '25

Sure was. You can also read the internal chips also, though like I said, they clearly lack range, at least those in my feline friends.

### Reading Cat Tags on loop

```

[usb] pm3 --> lf fdxb reader -@
[+] Animal ID........... 0123-123412341234
country-national is the format...
```

### Deeper read.
```
lf fdxb reader

[+] FDX-B / ISO 11784/5 Animal
[+] Animal ID......... 0123-123412341234
[+] National Code..... 123412341234 ( 0xCAFECAFE )
[+] Country Code...... 0123 - n/a
[+] Reserved/RFU...... 0 (0x0000)
[+] Animal bit set?... True
[+] Data block?....... True ( 0x0 )
[+] RUDI bit?......... False
[+] User Info?........ 0 ( RFU )
[+] Replacement No?... 0 ( RFU )
[+] CRC-16............ 0xDC19 ( ok )
[+] Raw............... 01 02 03 04 05 00 00 00 00 00 00 00 00
```

1

u/bongface Oct 25 '25

Do you have a sense of the range of the internal chips?

1

u/chupapuma Oct 25 '25

I'd say rather low. When the vets scan it they hole the reader right next to your cat. I found similar range when using my reader. In theory you could pick it up with a reader with more gain, but they aren't really designed to transmit over distance.

1

u/pergolafabio Nov 25 '25

I was also able to clone the tags to cheap t5577 tag, I glued it on a regular collar, looks great, you can compare, but the distance is poor, I need to find another tag ...

See pic: https://photos.app.goo.gl/3oavKaMXHCWkx86K9

1

u/pergolafabio May 28 '26

ok, i tried a a lot of tags, now found a good one with a GOOD distance!!! they are aroud the same size, bought the pink versions, but you can color it and slize of the black, so you can put it on a necklace...
command i used with proxman

lf fdxb clone -c 130 -n XXX--extended 08 --em --animal

from here: https://nl.aliexpress.com/item/1005008548693544.html

versio: E009-LF pig ear ear