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Saving power through a braid of radios

Small mobile devices depend critically on using as little power as possible. When the battery runs low, it would be really helpful if they could depend on external devices to support expensive communication as needed, rather than having to continue to drain what little energy they have left. A team in UMass have extended Bluetooth to add an RFID-like functionality. The radio operates in Bluetooth mode when the battery is sufficiently charged, but switches to RFID(-like) mode as the battery runs low. The team leader emphasizes that this only helps reduce the cost of communication, but that can still be a significant saving. This approach may also allow for reducing the size of battery needed for a small wearable.

Extending Battery Life for Mobile Devices | Office of News & Media Relations | UMass Amherst
 
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