Telegraph | News | Robotic ball that chases burglars: "A large black ball, originally designed by Swedish scientists for use on Mars, could be the latest weapon in the war against burglars.
The device, developed at the University of Uppsala, acts as a high-tech security guard capable of detecting an intruder thanks to either radar or infra-red sensors. Once alerted, it can summon help, sound an alarm or pursue the intruders, taking pictures.
It is capable of travelling at 20mph, somewhat faster than a human being. Even worse for intruders, the robot ball can still give chase over mud, snow and water."
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