It would be nice if phones had a feature where you can define more than one pin, but only one is for your actual phone contents - the other ones leave you to a completely harmless but otherwise indistinguishable looking smartphone interface that contains no or only completely bogus data.
Almost every chinese android variant has that. On Oppo it’s called clone system
Samsung has the secure folder which is similar. You lock aware the goods behind a second password and activating that secure folder can be slightly hidden.
One should be able to define a PIN number that wipes your phone.
My Oppo Find N6 allows multiple user accounts
It would be nice if I didn't get beaten with a hose in a vain attempt to prove that I unlocked the "real" one.