After Alberta's premier brought up the possibility of using smartphone apps to enforce quarantine orders, a former privacy commissioner and developer weigh in on balancing privacy and public health.

The justices’ 5-4 decision marks a big change in how police may obtain information that phone companies collect from the ubiquitous cellphone towers that allow people to make and receive calls, and transmit data.

LocationSmart, which collects location data from millions of cellphones across North America, reportedly revealed the real-time location of over 200 million people due to a website bug.