> For the complete documentation index, see [llms.txt](https://developers.doku.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.doku.com/accept-payments/doku-checkout/additional-feature/tokenization.md).

# Tokenization

### What is Tokenization ? 

Tokenization is a helpful feature that makes transactions easier. It works by connecting a user's account to future payments. Once someone enters their credit card details during their first transaction on the DOKU checkout page, that information is securely saved. Later on, when they make another payment, they can simply use the linked account, avoiding the need to enter their credit card details again.

### Supported Payment Channel

Tokenization supported by payment channel : 

* Credit Card

### How to use tokenized in Checkout Page ? 

What you need to ensure when activate tokenization is by bring parameter `customer.id` in your initial payment request. 

#### Request sample : 

```json
"customer":{
      "id":"JC-01"
}
```