PALO ALTO, Calif. (KGO) -- You have to be of a certain age to remember trading stamps. They were handed out by merchants, a loyalty program before there were loyalty cards, frequent flier miles and ...
Marks & Spencer has teamed up with Eagle Eye Solutions to test a mobile coffee stamp card app to reward customers for their loyalty. The app is called M&S Barista and will be trialled at 58 of the ...
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