Modern cars generate mountains of diagnostic data, and choosing the right OBD-II scanner can make the difference between guesswork and real fixes.

Smart glasses are inconspicuous, but this app can spot them for you.

Channel Sounding, for example, lets Bluetooth devices like trackers and smart locks find each other more easily and accurately. But you'd be forgiven for not knowing anything about it.

attempting to detect smart glasses nearby and warn you. HARASSING someone because you think they are wearing a covert surveillance device can be a criminal offence. It may even be a more serious ...