Thieves are becoming quicker, savvier, and more advanced. Vehicles, which are equipped with computer-based security system, keyless entry and ignition systems, can now be stolen in just a few seconds. Some thieves force the window of the car to have a good opening. The car door is later unlocked and locked. They then pop the hood, disconnect the battery and look for the ignition cable. If still, the method does not work, thieves have ample time to manipulate car alarm. I found a few videos that show us how they do it !