It works based on geofencing, which allows you to specify and label regions. | Hacker News

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		ajanuary on Oct 12, 2011 \| parent \| context \| favorite \| on: Daring Fireball: The iPhone 4S It works based on geofencing, which allows you to specify and label regions.

unlogic on Oct 13, 2011 [–]

And that just means keeping your GPS turned on the whole day. Sure, I always dreamed about losing all my battery charge to such an insanely great feature.

alphakappa on Oct 13, 2011 | [–]

You may want to wait and see how this feature really works.

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