Another Super Bowl Ad Fest, This Time on the Cellphone

Tracking via Bluetooth LE / iBeacons:

Once users download a brand’s app and give permission to receive alerts, they can get messages whenever their phone drifts within range of one of these beacons. Typically, users can stop the tracking and the alerts by changing the app’s settings.

via Another Super Bowl Ad Fest, This Time on the Cellphone – NYTimes.com.

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