When you hear about people using aluminum foil as a safety measure you probably imagine a conspiracy theorist with a tin foil hat on their head. But that tin foil hat could actually help protect your car.

Here's what's happening. Your car is always waiting for the signal from your key fob. But hackers can use devices to enhance the signal from your fob and unlock your car. But metal can block that signal.

You may have heard that you should put your keys in an empty coffee can at night. That can help. But during the day using a bit of foil wrapped around your key fob can keep the hackers at bay. Some experts even advise using some foil on that coffee can. This will give you two layers of protection at night. That can make the best part of waking up knowing that your car is safe.