Stoned data on phones

SENSORS on a person’s smartphone could be used as a tool to determine if they’re high, according to a new study.

Researchers at Rutgers University found an algorithm that combined sensors tracking movements and GPS data had a 90 per cent accuracy rate in determining if someone was stoned.

Data was collected from young adults who used cannabis at least twice a week. Researchers examined phone surveys, self-initiated reports of cannabis use and continuous phone sensor data to determine the time of day and day of week in detecting use.