| Subject | English | Portuguese |
| IT, tech. | card code | código de cartões |
| commun. | card issuer identifier code | código de identificação do emissor do cartão |
| comp., MS, Braz. | card validation code | código de validação de cartão (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 | card validation code | código de validação do cartão (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, Braz. | prepaid card code | código do cartão pré-pago (The unique, 25-character code on a prepaid card that adds computer use time to your prepaid computer or that pays for your subscription) |