For $1.62 from the Android Market, you can install Network Mapper on your Android device and, within minutes, begin scanning a network to take an inventory of every device hooked into it.

An curved arrow pointing right. Computer science Professor Paul Barford and a team of researchers recently published the first publicly available map of the US's long-haul fiber-optic cable network.

Computer science Professor Paul Barford and a team of researchers published the first publicly available map of the US's long-haul fiber-optic cable network. It took the team nearly four years to ...