I have a friend who uses an electronic key fob to enter and exit his apartment building. The fob isn’t metal, but it grants access electronically.
He occasionally engages in private activities.
My question is: Does this key fob log every entry/exit? He’s cautious with cell phones and leaves them at home, but wonders if the key fob could potentially cause problems.
The system almost certainly will record every usage of the keyfob. It may also record opening the door from inside.
Does it link this to each individual key fob?
Yes.
They know who has what fob so that if Fred in apartment 201 loses his fob they can invalidate it in the system and issue a new fob to Fred.
Almost certainly. You’d have to go out of your way to find a keyfob system that doesn’t. I administer a keyfob system at work, and I can tell you exactly whose key was used on which doors and at what times.