it has tracking capabilities. "If the suspects that stole the electronic device turns it off, then we cannot track the device," he said. "If the device is on, and the victim is able to show the officer where the device is going, we will send officers to the area and attempt to locate the suspect and device." In the most recent case, a man was mugged at gunpoint for his cellphone, wallet and backpack in the Diamond Heights area of San Francisco. The thief then jumped into a waiting van. The victim had previously installed a tracking app on his phone and police were able to use it to track the criminals, still sitting inside their van, to another location in the city. The cellphone was retrieved and the suspects were both charged with second degree felonies. Prey -- For Android smartphones and tablets, and Mac and Windows PCs. Once your laptop goes missing, mark it as "missing" on the site and you can monitor where it is with Wi-Fi geolocation. It'll also take a screenshot, in case it was stolen, so you can possibly catch a glimpse of the thief's activity. If you lost your phone, use the SMS service to send a message to your phone with your email address so the phone can be returned if it's found. The software is free, but you have to upgrade if you want to track more than one device and unlock other features. LoJack for Laptops -- This software for