The wonderfull Cash-chip was embedded into Visa debit card issued by the bank. It also had "Valid in Sweden only" printed beside it, on an othervise internationally recognized debit-card.

I know of at least one person who had to spend the night in a detainment cell at JFK and then had to take a plane back to Sweden the next morning because the customs agent concluded that they didn't have any money for their stay in New York.