Thumbprint is not currently in debate, a Virginia judge ruled it lawful for police to force you to unlock your phone. https://www.theatlantic.com/technology/ar

Thumbprint is not currently in debate, a Virginia judge ruled it lawful for police to force you to unlock your phone. https://www.theatlantic.com/technology/archive/2016/05/iphone-fingerprint-search-warrant/480861/ https://www.theatlantic.com/technology/archive/2016/05/iphon... iOS 11 has cop mode at least.