Nearly 100 percent of cars on the market include wireless technologies that could pose vulnerabilities to hacking or privacy intrusions such as a key fob that lets you unlock or lock your car with out a key. These are so convenient but there is a catch. There are several devices that will allow thieves to get into your car without breaking in. There are frequency jammers, key programmers, code grabbers and several other devices that puts your car at risk.
Since the carmakers are dragging their feet on the security issue, for now the solution is surprisingly low-tech but effective, say security experts. Store your key fob in the freezer or microwave (remember to remove it before heating up food!). The appliance acts as a Faraday cage that shields the key fob from radio frequency signals. Or wrap your keys in aluminum foil or put them in a metal box. Same principle as the freezer or microwave.
Another simple thing is to make physically sure that your doors locked when you push that button. You need to listen for audible clues your car gives to confirm that it’s locked. Don’t take it for granted. You can bypass the remote locking system and use a real old-fashioned key. Try the handles to make sure. The frequency jammers can't open the doors but they can keep them from locking.
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