Insert card A into slot B

I was behind a woman at the cash machine at the bank.  She tried putting her card in the cash dispenser bit.  Then another slot that it clearly wouldn't fit.  Completely oblivious to the flashing green light.  I figured I'd not invade her space, so let her work it out for herself while I went inside to use the other machine.

Presumably she failed.  She came into the bank a minute later.  then had trouble with the automatic (button operated) door.

Poor woman.  I guess some people just don't do technology.