Which of the following verifies identity based on possession?

The concept of verifying identity based on possession refers to the use of physical or digital objects that a user must have to authenticate themselves. An ID card is a perfect example of this principle, as it is a tangible item that individuals can physically hold, and it is typically issued by an authoritative entity to confirm a person's identity.

When someone presents an ID card, they demonstrate their possession of that item, which may include various attributes like a photo, name, and possibly a unique identification number. This method of authentication relies on the assumption that only the legitimate holder has access to that specific ID card, making it a reliable means of verifying identity.

In contrast, other options like a password, fingerprint, or username do not fit into the possession category. A password is something known, while a fingerprint is a biometric characteristic unique to an individual. A username identifies the user but does not serve as an object to be possessed, making these alternatives distinct from the notion of possession-based verification.