Anonymous crime reporting through cellphones I think is a good area to do some research. There are some good examples in some countries of Africa, as this one i

Anonymous crime reporting through cellphones I think is a good area to do some research. There are some good examples in some countries of Africa, as this one in Kenya: http://www.sida.se/English/Countries-and-regions/Africa/Kenya/Programmes-and-projects1/New-technologies-promote-democracy-participation-and-accountability/Facts-Mobile-phones-as-a-tool-for-democracy--texting-for-the-MDGs/ http://www.sida.se/English/Countries-and-regions/Africa/Keny... They are low tech (you don't have to own an iPhone to access an iOS app and report a crime, you just send a SMS), which I think is a great advantage. If you are able to create a good source of data of previously unreported crime through a good system of anonymous reporting, will help a lot the PD. In example, in my country lots of small crimes ( e.g. pickpocketing) go unreported because the chances are close to zero of recovering your things or find and punish the thieve. Also, lots of serious crimes (e.g. drug dealing, police abuse, murders) go unreported because people are afraid of retaliation. You see that I used a real case but I am giving my own ideas here, I hope you can have a use for this. But I really think the universal reach that mobile phones (including the simpler ones) have and the anonymity possibilities can be used to create a system that improves your city's criminal maps.