An EMCD Payment Card or any comparable programme should therefore be evaluated as a data and control product, not merely as a piece of plastic. Security testing should cover mobile apps, APIs, card data and custody connections. Providers should avoid designs where loss of one partner makes account value inaccessible. An AI-generated case summary must cite the source events: authorisation, clearing, conversion, customer contact and policy rule. The product is the control systemCrypto-linked cards make digital assets usable through established merchant acceptance.