We use 125K RFID at work and I have to carry one of those damn ID cards around. I'd like to clone the card to a keyfob. I've found cheap Ebay card cloners that come with 5 or 10 read/write keyfobs but that isn't how I want to do it. I'd rather FINALLY unbox the arduino uno I bought two years ago and learn how to burn a card myself. The only problem is that I cannot find any info on this. I see a ton of arduino readers but no writers (in 125khz). Anyone here ever mess with this stuff?

 

So why would you like to clone it to a keyfob? Curious

 

The primary reason - Fight the power! They want to lock me out of my work area, I'll hack around the damn thing.

Also, just something else to play with.

 

Hit these guys up:

Lares Consulting

 

My Girlfriend does RFID for a living. Building a Spoofer should do the trick:
A Universal RFID Key

 

I purchased a $12 Ebay copier the other day:





The description on the ad says:

Copy and duplicate the 125 Khz EM4100 / EM410X card /tag ID for backup purpose.
--Support 125Khz EM4100 / EM410X or compatible card /tag format only (HID standard NOT compatible!).


It appears to work as far as copying one keyfob to another but it will not read my RFID passcard from work. I have been told that my card is indeed 125Khz but there must be a difference in it and the keyfobs. Any chance you can ask your girlfriend what my next move should be? I don't want to buy any further equipment until I can figure out what I actually have.

 

Serious question: If your employer found out that you were copying your RFID card for any purpose, even a benign one, would you risk losing your job?

 

I would hope they would write me up instead of termination but I am not happy there anyway. No one wants to lose a job but sometimes thing work out for the best. Seriously...

 

Subscribing to see if rmcelwee gets canned. Also because RFID is kind of neat.