The US Government requires that garage door openers include an electric eye system that prevents the door from closing if the beam is broken. Unfortunately, given dirty garages, it is really easy for this beam to be blocked by dust and such. Two years ago, the beam system caused my door to go back up without my knowledge (I just hit the button and went inside) and as a result our garage was robbed that night.
This time of year is especially frustrating for us. My garage faces south, so the low sun this time of year overwhelms the electric eye system in most garage doors and causes them to refuse to close. It is hugely frustrating, and a real security issue. I glued tubes around each eye to try to shade the sun, but it is still working erratically. I spent much of last weekend trying to figure out how to bypass the system electrically but I could not make it work. Finally, I have had enough. I have spent ten times the cost of the garage door opener in stolen goods and my personal time fighting this stupid device. Tonight I am going to remove the two eyes and just mount them facing each other on a wall so I don't have to worry about them any more. Unless someone can come up with a better solution.
In my mind this is a classic example of government technocracy -- someone decided for us that we should value a minuscule increase in safety over a substantial reduction in security.