"Laptops are being accurately targeted for theft by thieves using WI-FI (Bluetooth) hotspot finders. This handheld device displays the signal strength using a principle not dissimilar to metal detectors.
It enables a thief to walk into a full car park of cars and accurately select those vehicles which contain laptops. They then force entry to the vehicle and steal the laptop.
Laptops which are WI-FI enabled emit a signal even when they are hidden within vehicles and turned off. If you need to travel with your laptop, you are advised to keep it with you at all times."
Can someone tell me if it is possible to trace laptops in this manner as it does not seem to make sense to me? I do not understand how a laptop can emit a signal when it is switched off.