Short battery life has been repeatedly cited as a big pain point for wearable devices and as a primary reason for their abandonment. Most recently, a survey by J.D. Power found that short battery life is the most common problem consumers have with their smart watch. While the perfect formula to achieve long battery life has yet to be cracked, developers are utilizing various approaches to enable their devices to last longer:
• Automatically switching to low-power mode. In this approach, the device identifies events during which the full-power consumption is not required. For example, PetSimple’s pet location tracking device uses proximity Bluetooth tracking to determine when a pet is in a safe area, and in such instances, the device enters a low-power mode where CDMA coverage and GPS tracking are not utilized. In this way, the company is able to offer a device with a battery of one month to three months, wh
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