# 1. 빌링키 발급하기

- [PG 결제창 이용하기](https://portone.gitbook.io/docs/v2-payment/unauthpay/billing-key/1/pg.md)
- [1. 빌링키 결제 API 구현하기 (서버)](https://portone.gitbook.io/docs/v2-payment/unauthpay/billing-key/1/pg/1.md): 포트원 빌링키 결제 API를 사용해 가맹점의 빌링키 결제 요청 API를 구현합니다.
- [2. 결제창을 통해 빌링키 발급하기](https://portone.gitbook.io/docs/v2-payment/unauthpay/billing-key/1/pg/2.md): PG사가 제공하는 일반 결제창에 고객이 카드정보를 입력하여 빌링키를 발급 받을수 있습니다.
- [포트원 API 이용하기](https://portone.gitbook.io/docs/v2-payment/unauthpay/billing-key/1/api.md): 포트원 REST API 를 이용하여 손쉽게 빌링키를 발급할 수 있습니다.


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