People who find themselves struggling to stay awake at their jobs may now find it a little easier to avoid getting fired thanks to a new wearable device that "nudges" its user when they start to doze off. The Vigo energy gauge -- which is worn on the ear like a Bluetooth headset -- records basic parameters, such as the time between blinks and the duration the eyes are closed, and uses a variety of customizable prompts to jolt wearers awake.

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