Now you can measure your blood pressure just by touching it with a finger onto this (above) hi-tech blood pressure meter.

With the meter, blood pressure can be measured without using a cuff, making it easy to measure the blood pressures of babies and elderly people.
Blood pressure is measured by touching a button-shaped small area on the meter. There are LEDs and photo transistors embedded in the area. The light emitted from the LEDs is reflected on a finger and detected by the photo transistors.

This gadget was exhibited by Nihon University at Medica 2012.
According to the university, the blood pressure meter was developed based on a technology that is called "Phase Shift Method" and was developed by Sadao Omata, professor at the College of Engineering, Nihon University. The Phase Shift Method does not use an external power supply for driving and drives a system by using sensed signals.

"The method reduces the number of components, makes it easy to reduce size and drastically improves S/N ratio," Omata said.

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