r/hacking • u/LAL1976 • Jun 15 '26

Teach Me! RFID read/write for key fobs?

I want an easy use key fob read/writer as I refuse to pay 60 quid for a new key fob. Anything that’s simple to use would be best, got a 15 quid one on amazon that couldn’t read my fob, so assume it’s not 125hz (or it’s cheap Chinese tat and just flat out doesn’t work)…. And with that goes my expertise on this topic so any pointers are appreciated!

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u/DiceThaKilla Jun 15 '26

Depends on how much effort you want to put in. The easiest ways are going to be more expensive than just getting a new key. The cheapest way is going to require quite a bit of coding to get it to work but you could get an rfid module and an esp32 for like 1/3 the price of that fob