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 ...
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A key fob that has stopped unlocking your car almost always has a flat coin cell battery inside it, a fix that costs as little as £2 to £5 (about $3 to $7) and takes two minutes. If a fresh battery ...