# Card Info - JSON Key is `cardInfo`, only in Request message, not mandatory
FieldTypeMandatoryDescriptionMemo
cardNoStringYesCard NoMandated for Credit Card payment transaction
passwordStringNoPasswordMandated when password is required, apply Financial encryption
validStringNoValid DateMandated for Credit Card payment transaction, format : YYMM
track1StringNoTrack 1
track2StringNoTrack 2Mandated for Credit Card payment transaction, apply financial encryption
track3StringNoTrack 3
cardSnStringNoIC SerialMandated for credit card payment transaction, such as IC card, apply Financial encryption
icDataStringNoIC DataMandated for credit card payment transaction, such as IC card, apply Financial encryption
cardTypeStringNoCard TypeSee details
tcStringNoTransaction CertificateTransaction Certificate
**cardNo encryption** - cardNo 3DES Encryption with pinKey,result format is HEX,see:[Encryption Algorithm](https://book.e-buy.com/books/e-buy/page/encryption-algorithm "Encryption Algorithm") **password encryption** - password ANSI X.98 Encryption with pinKey,result format is HEX,see:[Password Encryption](https://book.e-buy.com/books/e-buy/page/password-encryption "Password Encryption") **track1 encryption** - track1 3DES Encryption with pinKey,result format is HEX,see:[Encryption Algorithm](https://book.e-buy.com/books/e-buy/page/encryption-algorithm "Encryption Algorithm") **track2 encryption** - track2 3DES Encryption with pinKey,result format is HEX,see:[Encryption Algorithm](https://book.e-buy.com/books/e-buy/page/encryption-algorithm "Encryption Algorithm") **track3 encryption** - track3 3DES Encryption with pinKey,result format is HEX,see:[Encryption Algorithm](https://book.e-buy.com/books/e-buy/page/encryption-algorithm "Encryption Algorithm") **cardType Details** - 00 magnetic stripe card - 01 IC card - 02 NFC IC card - 03 Manully enter card Number - 04 scan qrcode - 05 other type - 06 collected by Cashier POS - 07 Apple Pay - 08 Samsung Pay - 09 Huawei Pay - 10 Mi Pay