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Originally Posted by Ken Case View Post
...but it doesn't actually use much additional power because its location tracking is based on changes to which cell tower is nearest (which the phone has to track anyway to receive calls) rather than using the GPS (which, as you point out, would drain power much more quickly).
Interesting implementation. I doubt I will use it, but I'm interested in trying it out nevertheless as I am open to the idea as long as battery life doesn't suffer.