In message , at 14:01:25 on Tue, 18 Oct
2016, tim... remarked:

Endangering Taxi drivers with irresponsible rear mounted card readers.

Huh? Wtf is dangerous about a card reader?

Perhaps it puts the driver into contact with the passenger - not
always a good idea.

so how does the driver avoid "contact with the passenger" when accept a
cash payment now?

The passenger slips it through a letter-box sized aperture.
--
Roland Perry