It is already the case. In the keynote, they demoed Fast User Switch with a touc...

stephenr · on Oct 31, 2016

Yeah i saw that, but FUS needs a password to login, just like if you use the regular login screen.

I was talking about "X needs your password to Y", e.g. unlocking sys preferences panels, keychain stuff, etc.

tajen · on Oct 31, 2016

... which opens up to the use case of: _____ ? of using a MBP as a cash register, where barmen can fastly display their list of customers ???