GrannyGravy13
If you are spending under £100 you do not have to use your PIN if your card is contactless, sometimes they ask you to insert the card and put in your PIN as a random safety measure.
The taxi driver will give you machine, so if you have to use your PIN he will not see it.
The only time facial recognition is used is if you have an up to date iPhone or android with your cards stored on it. The phone will unlock when it sees your face. You then present the phone near to the device, and it takes payment from the card you have chosen.
Thanks for the info GG.
I suppose taxis still have sliding glass windows between the driver and the passenger. I wonder if he slides the window open then he tells me what I have to pay, or is that still printed on the sign above the dashboard.