Cell location is already available to criminal investigation by law enforcement agency under warrant. It's a simple matter of legislating to make it available t

Cell location is already available to criminal investigation by law enforcement agency under warrant. It's a simple matter of legislating to make it available to epidemic investigation by health agency under warrant-like procedure. South Korea made such law after 2015 MERS epidemic. It does not enable NSA-like mass surveillance. Just do it now, so you can use it the next time.