This is an academic paper that discusses the feasibility of using a smartphone app to increase the response to opioid overdoses. Volunteers can signal an apparent overdose to other volunteers using the app to expand access and availability to naloxone. The first naloxone dose was provided by a nearby volunteer responding to the alert in 22 of 74 cases, successful reversal was reported in 71 of 74 cases, and layperson intervention preceded EMS by 5 min or more in 60% of cases.
Schwartz, D.G., Ataiants, J., Roth, A., Marcu, G., Yahav, I., Cocchiaro, B., Khalemsky, M., Lankenau, S. (2020). Layperson reversal of opioid overdose supported by smartphone alert: A prospective observational cohort study. EClinicalMedicine, 25, 100474.