| Subject | English | Korean |
| comp., MS | card validation code | 카드 유효성 검사 코드 (A code that credit card companies use to authorize credit card charges. For example, American Express uses a four-digit number on the front of the credit card, and Visa, MasterCard, and Discover use a three-digit number on the back) |
| comp., MS | prepaid card code | 선불 카드 코드 (The unique, 25-character code on a prepaid card that adds computer use time to your prepaid computer or that pays for your subscription) |