Here's what I want. A very quick and preferably non-obvious / grossly apparent way to trigger my touch ID enabled phone to force prompt for passcode/word. Pus

Here's what I want. A very quick and preferably non-obvious / grossly apparent way to trigger my touch ID enabled phone to force prompt for passcode/word. Push the power button thrice. Touch with a different finger. Whatever. Something that takes a second, involves no "obvious" movements or none that can be stopped part way through, and that disables touch sign-on until I actually enter the passcode/word. Will it stop someone rubber hosing me? No. Will it hinder BS like the above? Maybe. (Especially when I have a few moments to react before the aggressor gets to me.)