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A new app that uses sonar to monitor breathing rate can sense when someone has overdosed on opioids. During an overdose, a person breathes slower or stops breathing altogether. These symptoms are reversible with the drug naloxone if caught in time. But people who use opioids alone have no way of asking for help. The app, called Second Chance, accurately detected overdose-related symptoms about 90 percent of the time and can track breathing up to three feet away from the phone. “The idea is that people can use the app during opioid use so that if they overdose, the phone can potentially connect them to a friend or emergency services to provide naloxone,” says co-corresponding author Sh... Full story

11 January