TWO XP sightings today!
First one was at CountryMax ( a farm/pet supply store). It was on a cash register. Interestingly, the other two registers ran 7 and 10, leaving none with the same OS.
No picture for this one, sorry, the cashiers were conveniently in the way.
The second was Windows XP Embedded at Wegmans (Grocery Store), on a scale. Amusingly it was stuck logging on.
They have many scales there, they probably run XP embedded as well.