Nokia's already done a bit on its own to exploit the built-in GPS on its phones, and it's now enlisted the help of Securitas to take things a bit further into Big Brother territory, with the pair today announcing a new security service that'll let folks keep tabs on you and let you keep an eye on others. Dubbed Safe-2-Go, the service apparently consists four main features, including the usual alert system that dials into the Securitas alarm center and notifies your chosen contacts, a "Find" feature that lets you check on the current position of your friends, a "Zone" feature that sends out an SMS message when someo