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Smartphone Sensor Data Might Detect Cannabis Intoxication


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Smartphone sensor data might be able to determine if a person is intoxicated after consuming marijuana, according to a new study.

"Using the sensors in a person's phone, we might be able to detect when a person might be experiencing cannabis intoxication and deliver a brief intervention when and where it might have the most impact to reduce cannabis-related harm," says Tammy Chung, professor of psychiatry at Rutgers University.

The feasibility of the approach is described in "Mobile Phone Sensor-based Detection of Subjective Cannabis Intoxication in Young Adults: A Feasibility Study in Real-World Settings," published in Drug and Alcohol Dependence.

Existing detection measures, such as blood, urine, or saliva tests, have limitations as indicators of cannabis intoxication. The researchers found that some smartphone data had 60 percent accuracy in detecting self-reporting of cannabis intoxication, and in combination with additional smartphone sensor data had 90 percent accuracy.

From Rutgers University
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