as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
are cashiers required to check a credit card for a signature in the u.s.?
user
i'm not sure if they're required to do so, but i have been neglecting to sign my cards for some time now.  if they do check, that triggers an id check, where they'll find my signature.  i know of at least one person that writes "see id" instead of signing their cards.  he began that practice over 10 years ago.
assistant