How to emulate a RFID key, cheaply? Answered
I've gotten into this nasty little habit of locking my keys in my apartment (twice this month). It costs me 20 bucks to get back in!
We have a RFID key which costs 50 bucks to get a copy of!, There is no code on the back of it either. So, I figure, I'm mechanically inclined, I know how to solder, I can read electrical schematics, I understand diodes, caps, variable resistors, resistors, switches, leds, grounds...so on and so forth. I by no means understand it all.
Anyways, I am rambling. How could I build a cheap (under 50) key emulator? Just to keep in the Jeep for when this happens again