Thieves are using an inexpensive amplifier device to trick remote keyless entry/push-button start vehicles into unlocking themselves, police warn.

Instructables user 5hockwave2 shows you how to open the case for your remote, and add some wire—any thin wire should do—with a little solder to the existing antenna.

Remote keyless entry systems can vary in terms of features and connections. Hence you will need a manual with programming instructions for your specific car brand and type of remote keyless system.