Thanks so much for that observation. The tweet doesn't say "contact tracing apps", it says "contact tracing." Those might be entirely different things! I'm sti

Thanks so much for that observation. The tweet doesn't say "contact tracing apps", it says "contact tracing." Those might be entirely different things! I'm still interested in how exactly they're doing it, but it might be as simple as asking the arrested people, running background checks on them, or digging through their phones and possessions.