http://www.defensetravel.dod.mil/sit...velcard_cp.cfm
Looks like they went with the Barclaycard approach (chip and signature with a PIN backup that's pushed to the card on first use) for DoD travel cards. From
here:
How do I use my Chip and PIN card for the first time at a chip-enabled terminal?- Go to a staffed POS terminal (not self-service), equipped with smart-chip reading hardware. Until you complete your first Chip transaction at a staffed terminal, your newly selected PIN will not be recognized at chip-enabled self-service terminals. Note: Your GTCC may only be used for authorized travel.
- Insert the card, chip first, into the terminal and do not remove until the transaction is complete.
- Confirm the purchase amount and sign the transaction receipt.