https://techcrunch.com/2020/08/18/bluetooth-sig-works-to-include-wearables-in-covid-19-exposure-notification-systems/

Current smartphone-based exposure notification systems (ENS) like the one created jointly by Apple and Google are a clever way of leveraging modern technology to support comprehensive contact tracing efforts by health agencies worldwide. But the COVID-19 pandemic is not what anyone had in mind when the Bluetooth standard was created, so the Bluetooth Special Interest Group (SIG) is working to create a new specification that would allow wearable devices to work in tandem with smartphones to expand the reach of ENS tech.

That would mean that devices like wristworn smartwatches and activity/health trackers could also participate in systems that track potential exposure and provide notifications about potential COVID-19 contact events. It may seem like a small tweak if you assume that most smartphone users are seldom without those devices, but Bluetooth SIG points out that expanding to wearables could help include groups of people who aren’t typically smartphone users – including young, school-aged children, and older adults in care facilities – in ENS efforts.