Recently I had the following idea.
I live in a rural area where few people pass in front of our house. Burglars like such areas, because the chance of being seen breaking into a house is small.
Assuming burglars carry a smartphone, would it be possible to somehow track them? I imagine a system where requests for WLAN networks (which I think happen regularly with WiFi enabled on smartphones) store the request and some data about the phone in a database, together with a timestamp. If someone then breaks into our house, we just pass the logged information on to the police.
Would the data transmitted by smartphones suffice to help the police? If yes, which parameters specifically would I need to track, and what technical infrastructure would be needed?