Thieves breaking into keyless entry cars, and how to prevent it
Normally when approaching a car such as a Toyota, and the key fob is on one's person, simply pulling the handle of the door is enough to initiate the unlocking sequence. This has to do with the car sensing the key fob's Radiofrequency right next to it.
It is speculated that thieves have an amplification device that fools the car into thinking the key is closer to the vehicle than it actually is, in my case the keys are actually inside my house.
Fortunately there is a physics principle to contain radio frequency waves called a Faraday Cage. It is constructed by using a non-conducting metal cage to entomb the RF emitting device. This picture demonstrates my take on the faraday cage, but a simple Google search will review other options that can be constructed at home. This one cost me about $12. I tested it by trying to open my car door with the keys inside those cookie tins, and it simply would not work, proving that the faraday cage locked up the signal.
My car has not been broken into since I started using this system six months ago.