Which multifactor authentication method does a smart card satisfy?

A smart card is categorized as "something you have" in the context of multifactor authentication methods. Multifactor authentication typically relies on three categories of factors: something you know (like a password), something you have (like a smart card), and something you are (such as biometric data).

The primary characteristic of a smart card is that it is a physical device that the user must possess to access a secure system or service. This provides a tangible element of security, as an attacker would require both the card and the user's other credentials to gain access. Therefore, the identification and verification are based on the user's possession of the smart card.

The other categories involve different forms of authentication. For instance, "something you know" relates to information only the user is supposed to know, such as a password or PIN, while "something you are" pertains to biometric factors like fingerprints or facial recognition, and "something you look like" is a less common terminology that might refer to facial recognition but does not represent a standard category in multifactor authentication. A smart card, being a physical object, uniquely fits into the "something you have" category, making that the correct choice.