How does the modern criminal plan out a caper? Not on a cellphone -- if he's smart, that is. 

Smartphones can take pictures tagged to a particular location and time, provide turn-by-turn directions, find the closest gas station or the best nearby Italian restaurant, and communicate via voice, texting, e-mail and even videoconferencing.

They can also store all that information, yielding everything the cops need to capture a bad guy.