Webtwic® cardholders eligible for tsa precheck must include the cin printed on their twic® card in the known traveler number (ktn) field of each reservation made with a. Webvisit this page to start your enrollment or renewal process for twic®. Webwhat is a twic card? The transportation worker identification credential, also known as twic®, is required by the maritime transportation security act for workers who need access to secure areas of the nation’s maritime facilities and vessels. Webthe new twic card design incorporates enhanced security features, including tactile printing, holographic laminate, and an integrated circuit chip with the card holder’s name. Webtransportation worker identification credential (twic) cards are required for some personnel entering secure areas, including workers in maritime facilities and. Webif you’re involved in specific industries, such as truck driving, port operations, or maritime security, you may have heard of a twic card. Webthe transportation worker identification credential, also known as twic®, is required by the maritime transportation security act for workers who need access to secure. Webtsa precheck® for transportation worker identification credential (twic®) cardholders. Many twic cardholders meet the criteria for the tsa precheck application program. Weba twic (transportation worker identification credential) badge is a federal id card issued by the tsa used for granting access to transportation workers.