The Intercept presents Haven, an app created with the insight of Edward Snowden to protect people from "evil maid" attacks.
The app, open-source and currently Beta, is a collaboration between #Snowden (through the FPF) and #GuardianProject. It can be obtained from the Play Store and #FDroid.
The app, installed on a smartphone, records sound, movement and video while sending notifications another phone.
Read more here: https://theintercept.com/2017/12/22/snowdens-new-app-uses-your-smartphone-to-physically-guard-your-laptop/