How's it going guys? New member, but not necessarily a newb at electronics. Current going for my EE degree (just finished my 1st yr). Anyways, I was tossing around the idea of a keyless ignition system for my car the other day. Now, the way my current ignition works is it measures the value of a resistor with-in the key and if the proper voltage drop is seen, the car will start. I want to do away completely with the key, yet still retain this feature (in a way); I want the car to only start when a certain device (chip, key fob, etc) is with-in a certain range (looking for 5ft or so). I was thinking of using a RFID device for this, but was wondering if you guys know of anything better/cheaper? Most RFID devices I find in my price range only have 10cm or so range . Pretty much, I'm looking to build a device that, when a chip is with-in it's range, will send out a voltage to the ignition system. The starter will then be activated by a NO momentary button.