See this article on MKBnet and find out that the Dutch e-purse Chipknip is a real succes in the niches for parking (+28 %), vending (+17%) and catering (+27%). This is data from 2006 and shows that the Chipknip is a succes in the PARVENCA niche and not so much elsewhere.
For Point of Sale terminals (at retailers), one out of ten shoppers uses the Chipknip. It can be assumed that this percentage will become lower as Currence recently launched a campaign to promote the use of the debit-card (PIN) for low value payment at the retailer ('Klein bedrag, pinnen mag!').