http://goo.gl/O8yO6n
In 2012, Kenneth started developing a device that would prevent his grandfather from getting out of bed at night unsupervised. He ended up creating a pressure sensor that attaches to the foot. When his grandfather put his feet on the floor to get out of bed, the pressure sensor wirelessly delivered an alert to his aunt’s phone via Bluetooth. During six months of testing, the device caught all of his grandfather’s attempts to get out of bed, with no false positives reported.