Need further confirmation that an IV drip of 5-Hour Energy is what your body really needs? Look no further than Murata's newfangled fatigue sensor. Demonstrated at CEATEC in front of thousands of jetlagged Americans, Europeans, Easter Islanders and Samoans, this compact device is built by "integrating a photoplethysmographic sensor, which measures a pulse and a blood oxygen saturation level, and electrodes that measure electrocardiogram (ECG)." We're told that the unit measures a fatigue degree (reported on a 1 to 100 scale) based on the "pulse, blood oxygen saturation level and electrocardiogram measured by the sensing parts," and while we're guessing the prototype will have to shrink significantly before it happens, the company seems focused on cramming this thing into cellphones and portable game consoles of the future.You know -- so Nintendo actually can know when you need to lay down the gaming and step outside for a bit.