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The Measure
uses AR (augmented reality) and a special
that is inside the camera. The technology behind the sensor is called LiDAR. This is an
for "light imaging, detection, and
". LiDAR is also called 3D laser scanning. It is used to make
3D models of areas of the Earth's
and of the bottom of the ocean. LiDAR measures a person's
by sending out pulses of light. These light pulses bounce off the person being measured and return to the LiDAR sensor. The app measures how long this took. The
of time helps the app to calculate the person's height. The website bgr.com joked that the app, "isn't as
as drawing lines on a
" to find someone's height.
