card clash

noun

The situation where two or more contactless payment cards are simultaneously detected by a card reader, possibly resulting in the incorrect card, or more than one card, being charged.

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Meanings

nouncard clash (uncountable)
  1. uncountablebankingThe situation where two or more contactless payment cards are simultaneously detected by a card reader, possibly resulting in the incorrect card, or more than one card, being charged.
    1 more example

    From September passengers will be able to enter by tapping their credit card at the barriers – with the new Tannoy announcement "avoid card clash" joining the familiar "mind the gap" as the sound of the Underground. Card clash can be avoided with an even newer technology, contactless payments via mobile phones: […]

    2014 August 13, Gwyn Topham, “Open data and driverless buses: how London transport heads to the future”, in The Guardian
Cite this entry
APA

card clash. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/card%20clash

MLA

“card clash.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/card%20clash. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “card clash,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/card%20clash.

Source: card clash on Wiktionary, CC BY-SA 4.0.