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Card-Tokenization 101

This documentation is for the legacy Helcim Gateway. New merchants should refer to the Helcim Commerce API documentation.


How it Works

When a transaction is processed our Card Vault stores the card information in our secure card vault. As part of the transaction response, a 23-character alphanumeric card-token is provided back to your application. This token can safely then be stored in your local database as it is not an encrypted credit card number, but instead an identifier for the stored credit card.


Reusing the Token

When you are ready to reuse the credit number for a new transaction, you simply send the token and first 4 last 4 digits instead of the full credit card number along with the rest of the transaction information. The credit card that was originally billed is retrieved from our card vault and used for the new transaction.