Chipknip was a stored-value payment card system used in the Netherlands. Based on the Belgian Proton system, it was started by Interpay on 26 October 1995, as a pilot project in the city of Arnhem and a year later rolled out countrywide. Chipknip was taken over by Currence due to a restructuring on 17 May 2005, who managed it with their licensees until its discontinuation on 1 January 2015. The Chipknip was primarily used for small retail transactions, as the card could contain a maximum value of 500 euros. The money needed to be transferred from a card holders main bank account using a loading station which were generally located next to ATMs.

A smart card (SC), chip card, or integrated circuit card, is a card used to control access to a resource. It is typically a plastic credit card-sized card with an embedded integrated circuit (IC) chip. Many smart cards include a pattern of metal contacts to electrically connect to the internal chip. Others are contactless, and some are both. Smart cards can provide personal identification, authentication, data storage, and application processing. Applications include identification, financial, public transit, computer security, schools, and healthcare. Smart cards may provide strong security authentication for single sign-on (SSO) within organizations. Numerous nations have deployed smart cards throughout their populations.