Key points from article :
Google has bought North, a Canadian company that specialized in smart glasses called Focals.
Focals contained a processor, battery and Bluetooth module in the arms of the frame.
Had a holographic display that allowed wearers to see notifications or even call a taxi.
Google's previous attempts to capture the market with Google Glass was unsuccessful.
Aims to broaden their efforts to build helpful devices and services with North’s technical expertise.