Your smartwatch is giving away your ATM PIN

Wearable devices—Fitbits, Jawbones, Nike+, Apple Watches and the like—are white-hot. The tech segment is already producing an estimated $14 billion in sales worldwide, and expected to more than double within four years, ...

Ultra-thin solar cells can bend around a pencil

Scientists in South Korea have made ultra-thin photovoltaics flexible enough to wrap around the average pencil. The bendy solar cells could power wearable electronics like fitness trackers and smart glasses. The researchers ...

Harnessing the energy of small bending motions

For many applications such as biomedical, mechanical, or environmental monitoring devices, harnessing the energy of small motions could provide a small but virtually unlimited power supply. While a number of approaches have ...

A Wi-Fi reflector chip to speed up wearables

Whether you're tracking your steps, monitoring your health or sending photos from a smart watch, you want the battery life of your wearable device to last as long as possible. If the power necessary to transmit and receive ...

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