As people strive ever harder to minutely quantify every action they do, the sensors that monitor those actions are growing lighter and less invasive. Two prototype sensors from crosstown rivals ...

The multifunction LCD shows vital stats, and pulse sensors help track heart rate. Built with durable materials, this elliptical is great for calorie-burning and endurance training.

From lightweight armbands to elite chest straps, these are the best heart rate monitors for tracking your pulse during workouts.

Optical Pulse Sensor Market: Rising adoption of wearable devices to drive growth Rising disposable income and rapid internet penetration have increased the adoption of smartphones worldwide.

Stanford University researchers have developed an arterial-pulse sensor to wirelessly monitor blood flow, an advance that could allow doctors to remotely monitor the success of blood vessel surgery.