Ten seaports around the nation are preparing for the rollout of the Transportation Worker Identification Credential (TWIC), which is set to start in April with full implementation anticipated by mid-2008.

The TWIC program is designed to supplement the government’s layered approach to supply chain security. However, the rollout has been delayed over software and hardware issues as well as the specific requirements for worker background checks.

The Transportation Security Administration (TSA) has yet to disclose the identity of the ten seaports chosen to debut the TWIC card.