[There was that reminder that not all of them came from places with more 'modern' technology. She absently added]

It's a tracking system.

[She fiddled with a strand of her hair as she thought about the 'how'. They probably couldn't just ask to look at it but...]

It's probably in one of the stations we passed. Our best bet is checking the one with management, since they'd probably be the ones with free access to the footage.

[Getting in was an issue but, well, there was some advantages to not being seen by most.]