Sometimes, when i get bored i get into wifi networks around the city with an application i coded long time ago.
The “cracking” is simple, i use an algorithm that takes as input a hotspot’s mac address and then guesses the default password. Once inside i launch Fing, an scanner app that reveals LAN’s computer in a pretty fast and straight way.
While i was waiting inside the car parked outside a store, i was able to download a full database of clients and credentials. What calls my attention is that i get the same result all around the city. With no effort and just a smartphone i gain access to sensible data, close circuit cameras and all kind of useful stuff.
I guess this is just the future and you can “Hack” the city. 🙂