Occipital built a special laser projector that, while is small in size ... with an onboard six-axis IMU (inertial measurement unit), which makes sure all the sensors are in sync.

ST has integrated six accelerometers into a 2.5 x 3mm inertial measurement unit for sports wearables. “Capable of measuring events ranging from slight movements to intense impacts with equal accuracy, ...

An AI-based algorithm running on ADAM's microprocessor analyzes readings detected by the IMU in real time ... the wearer is awake In a small-scale test of ADAM, the sensor was used every night ...