EasyPay Simple Payment

EasyPay Simple Payment is a white-label payment solution that allows customers to register a payment method once and subsequently make fast, convenient payments using only a password (PIN) or biometric authentication.

Merchants can build their own branded simple payment system through EasyPay and flexibly choose between PG (Payment Gateway) and VAN (Value Added Network) integration methods based on their business environment.

💡 Core Process: User Registration

To process payments, a user must first be registered. During this process, a Customer Key is issued, which serves as the core identifier for future payment approvals.

1. Application: The customer attempts to sign up for Simple Payment within the merchant's app.
2. Verification & Registration: Complete Identity Verification → Card/Account Registration → Payment PIN (6-digit) setup.
3. Key Issuance: EasyPay issues a unique Customer Key to the merchant.

Managing the Customer Key

The Customer Key is a mandatory parameter for inquiring about payment methods and requesting approvals. If lost, you can retrieve the same key by re-requesting with the exact information used in the initial request.

💳 Payment API Flow (Hybrid Payment)

EasyPay's greatest advantage is its support for both PG Payment and VAN Payment. Choose the flow that best fits your store's settlement method or fee policy.

PG Payment Flow (Online)

Optimized for online non-face-to-face payments. By using the EasyPay PG service, you can provide interest-free installments, card point usage, and integrated settlement services.

The merchant receives an Auth Transaction ID and requests approval from EasyPay PG.

VAN Payment Flow (O2O)

Used when you have an existing VAN Terminal ID or require offline integration. It requests approval directly from KICC VAN without going through a PG.

The merchant receives an Auth Transaction ID and requests approval via the KICC VAN API.

✅ Integration Checkpoints

Category	PG Payment	VAN Payment
Approval Subject	EasyPay (EasyPay PG)	KICC VAN
Settlement Subject	EasyPay (Integrated Settlement)	Individual Card Issuers (Direct Deposit)
Advantages	Easy online integration, various add-on services	Potential for lower fees, offline integration
Dev Point	Call approval API to EasyPay	Call approval API to VAN Server