WSJ’s Geoffrey A. Fowler tests the system that sees through walls. Illustration: Merrill Sherman/The Wall Street JournalIt used to be that security systems could only protect what was right in front of them. Lots of DIY security systems rely on streaming cameras, which can have the creepy side effect of turning your family life into a reality show. Aura is a home security system that uses technology to monitor the disruption of wireless signals caused by movement in the home—without the use of cameras. Aura isn’t a home security system like ADT, installed and monitored by professionals for a monthly fee.

Source: Wall Street Journal May 03, 2017 16:30 UTC