What is a key element of illegal possession or use of a credit/debit card?

Using a stolen or revoked card without consent is a key element of illegal possession or use of a credit/debit card. This action is inherently unlawful because it involves taking advantage of someone else's financial resources without their permission. It constitutes a violation of both criminal and civil laws related to fraud and theft.

When someone uses a card that has been reported as stolen or is no longer valid due to revocation, they are exploiting the financial institution's trust in the cardholder by engaging in unauthorized transactions. This not only harms the cardholder but also undermines trust in the payment card system as a whole.

Other options such as possessing a valid card with permission or obtaining property with the cardholder's consent indicate legal usage, while knowing a card is active and authorized for use does not address the illegal aspects tied to ownership or consent. Thus, the correct answer emphasizes the unlawful nature of using a credit or debit card when it is stolen or revoked, clearly illustrating the illegitimacy of that action.