When separation happens either side can have an alarm going off. Because my wallet is always in my pocket I could set that device to have an alarm, which will mean if I leave my phone behind, my wallet's Trackr will sound an alarm in my pocket.
When separation happens either side can have an alarm going off. Because my wallet is always in my pocket I could set that device to have an alarm, which will mean if I leave my phone behind, my wallet's Trackr will sound an alarm in my pocket.