2020.01.09 16:31:13 (1215294963468177408) from Daniel J. Bernstein:
Does Apple's "Find My" really force an otherwise quiet device to continuously broadcast its 15-minute visible identity (MAC addr, FM key, etc.)? Maybe safer: devices all try to switch identities at :00,:15,:30,:45, and do just 1 broadcast at a random time in each identity period.