How Does Your Key Fob Work? The key fob uses wireless technology with a frequency of 433 MHz. There are receivers/transmitters on the vehicle and the key, so they can communicate with each other. This ...

A key fob is a small device that helps you engage the security system on a car to gain access and, sometimes, start the car remotely. They come attached with an RFID chip & an antenna inside and use ...

It might not occur to you that your car's key fob has more uses than simply opening and locking your car doors. After all, that was the original purpose behind the invention of keyless entry: so that ...

Add Yahoo as a preferred source to see more of our stories on Google. Thanks to key fobs, hardly any modern cars still need to be manually opened with a key. But what do you do when the battery runs ...

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