Migrant camps in 12 person rooms stacked on top of each other to form 1000 people dorms, with shared toilets and showers and limited sockets to charge devices. (i.e. the devices are next to each other waiting to charge, while the person is in the shower block, or sitting in locker blocks so they don't get stolen while they sleep).
If you cannot get them to wear their masks at 'home' in these dorms, then how would you get them to wear a bracelet? And also what would be the point?
Migrant camps are mostly youngsters, so the death rate will be very very low, if you take out the old people and keep it contained in the migrant camps the deaths should be minimal. Something a bit more old fashioned. IMHO.