What is a key fob, anyway?

A key fob is a small remote device that allows you to control a keyless system. With a key fob, you don’t need an actual key to get into your car. The key fob uses radio frequencies to communicate with your car and control it. The jingling of keys becomes a sound of the past if you have this handy device.
It turns out, there’s a lot you can do with this convenient piece of technology. Here are some secret uses for your car key fob that you may not have known before.
Start your car remotely with your key fob

In some cars, your car key fob can remote start your vehicle on chilly mornings. Just look for the remote engine start button often labelled with a circular arrow, Consumer Reports says.
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Use your fob to lower your windows

Did you know that you can also use your key fob to catch a breeze? HuffPost reports that many cars’ key fob can now roll down all windows at once. Try pressing your unlock button twice, holding down the second time until all windows are open.