Re: Fingerprint sensor on the rear
I guess it is open to interpretation but https://www.gov.uk/using-mobile-phones-when-driving-the-law says that a mobile phone in a dashboard holder, as I described, is permitted.
Difficult to see that it is much different to poking at the display of the in-build satnav, or the in-built climate control pannel, or changing the traction control on the fancy screen, or even the simplest of tasks such as pressing the ON button for the heater, radio, lights etc.