Besides the regular equipments like a cuff, a pump, and stethoscope or electronics available for measuring blood pressure which are bulky, Philips consumer electronics company is keen on developing an underwear that actually monitors one's blood pressure continually. Each sensor recurrently measures the electrical impedance of the tissue beneath it – a property that changes as the pulse wave passes by.

A pair of such sensors can calculate the speed of the pulse wave by timing how long it takes to travel from one sensor to the other. Once calibrated with a conventional blood-pressure reading, the electrodes can then give accurate blood-pressure readings, while the wearer enjoys the comfort of their own underpants.

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