Comment by nilstycho
10 years ago
The weirdest case at my tenure as a neighborhood computer tech was a personal notebook computer that would not boot up at the customer's apartment. Of course we assumed user error, but further investigation revealed that if the computer were running as it approached the home, it would bluescreen about a block away.
We guessed it was due to some kind of RF interference from a transmitter on the apartment building. Removing the WiFi module and the optical drive had no effect, so we further guessed it was interference within the motherboard or display. Rather than investigate further, we replaced the notebook at that point.
My car radio goes from everything working fine to complete static on every station in like 10 feet as I drive into my local Safeway parking lot. I'm pretty sure they are jamming the signal, I just don't know why.
Some places with shopping carts have an "invisible fence" that locks up one of the wheels of the cart when you push the cart outside the property. These are usually marked with a yellow line on the ground. I presume they use some kind of RF field with an underground wire. Maybe that Safeway has some issues with theirs.