Which expansion corresponds to the acronym PTS?

• A. PIN Transport System
• B. Protocol for Transaction Security
• C. PIN Transaction Security
• D. Private Transport Service

Answer: (C)

The main concept is recognizing the official expansion of the PCI term PTS. PTS stands for PIN Transaction Security, which focuses on protecting the personal identification number during a payment transaction—especially at the point of entry on devices like PIN pads and card readers, through secure processing and cryptographic protections. This includes secure PIN entry devices, encryption of the PIN in transit and at rest, proper key management, and resistance to tampering and PIN data theft.

The other options don’t match the PCI terminology: PIN Transport System suggests merely moving PIN data rather than protecting it during the transaction; Protocol for Transaction Security sounds generic and isn’t the established PCI expansion; Private Transport Service has no relation to payment card security standards.