Passengers who have used their own credit card or Visa/MasterCard debit card for purchase of the ticket must also present their payment card together with their personal identification (photo ID or passport) during check-in. Please note that the name and number on the payment card must be spelled exactly identical to the name on the identification card or passport.
If the traveling passenger is not the credit card or Visa/MasterCard debit card owner, please see the Regulations.
Passenger who purchases online ticket for him/herself with credit card, the password VBV (Verified by VISA) or 3D Secure (Master Card Secure)shall be the additional security and assurance for such card holder only. However, he/she will still be required to present such credit card at check-in counter and/or contact any THAI city selling office in person unless his/her consent form has been signed.
Сами Regulations я на сайте не увидел, но из вышенаписанного это и так ясно.