Which of the following is NOT considered a part of a check?

The concept of a check involves multiple components that serve distinct purposes for identification and validation. The account number is essential because it indicates from which account the funds will be withdrawn. The routing number is equally crucial as it identifies the bank or financial institution that holds the account. Meanwhile, a signature is a vital element since it authenticates the check, indicating that the account holder has authorized the transaction.

In contrast, a PIN (Personal Identification Number) is not a part of a check. PINs are primarily associated with bank card transactions and online banking, serving as personal security measures to access an account. Since checks do not incorporate PINs, this makes it the correct answer to the question about what is NOT considered a part of a check. Understanding these components helps clarify how checks operate within banking systems and the roles they play in financial transactions.