https://www.inverse.com/article/11455-myshake-turns-phones-into-seismic-wave-shazam-distributes-the-richter-scale
'MyShake' Turns Phones Into Seismic Wave Shazam, Distributes the Richter Scale
Feb 14, 2016 - The other phone vibrations.
richter scalemyshaketurnsphonesseismic
https://feddit.com/c/technology/p/125363/app-turns-phones-into-at-home-ultrasound-devices
App turns phones into at-home ultrasound devices
at homeultrasound devicesappturnsphones