Monitor your parent's house for falls without a wearable device

Emerald is a new device that detects elderly falls and monitors fall
precursors including gait and balance problems, all without requiring any
on-body sensor.

Emerald is based on patented and award-winning technology from MIT CSAIL
called WiTrack. Emerald tracks the 3D motion of a person from the radio
signals reflected off her body. Similar to a Wi-Fi router, Emerald works even
if the person is in a different room than the device. There's no need for the
individual to wear any sensor or modify their behavior in any way. Emerald
exists in the background of the home.

The movement pattern associated with a fall is unique and detectable by
Emerald's software. The data can also provide information about how a
person's mobility is changing and even for gait analysis to help predict when
a person's risk for a fall is increasing. No preventative products of any
kind currently exist.

Read more information and view a video (1:17):
http://www.emeraldforhome.com

Links:
Wireless Systems that Extend Our Senses: Seeing through Walls, Gesture
  Control, and Vital Sign Monitoring
https://www.seas.harvard.edu/calendar/event/86506
https://cs.nyu.edu/dynamic/news/colloquium/746
https://cyber.stanford.edu/events-0

WiTrack - Through-Wall 3D Tracking Using Body Radio Reflections (with video
  2:29)
http://witrack.csail.mit.edu