Manual Checkout
Objective
Establish the minimum requirements for the manual checkout flow, enabling sellers to input transaction amounts, select a payment method, and complete the operation via NFC (Tap to Pay), with clarity, security, and efficiency.
Insights
The flow must comply with PCI MPoC standards for proximity payments.
NFC interaction must be tested across multiple device types (POS terminals and smartphones).
The delay between payment method selection and NFC detection must not exceed 5 seconds, except in justified technical scenarios.
Accessing the Checkout Flow
01 - “Charge” icon in bottom navigation
Must always be visible as a main navigation item. When selected, it must open the amount input screen.
Mandatory:
The charge/checkout flow must be accessible from anywhere in the app and have visual emphasis equal to cart or catalog entries.
Entering the Checkout Amount
02 - Amount input field
Must be centered, with readable font and active cursor. Only valid numeric input should be accepted.
03 - Quick amount suggestions
Predefined values (e.g., R$ 50, R$ 85) must be visible and tappable
04 - Custom numeric keypad
Must be in-app (not system default), with large, responsive buttons.
Mandatory:
The “Continue” button must remain disabled until a value greater than zero is entered.
Selecting Payment Method
05 - Payment method modal
Must include at least the following:
Tap to Pay
Pix
Payment Link Order may vary, but Tap to Pay must be clearly visible and accessible.
Mandatory:
Selection must be clear, with both icon and label, following accessibility standards.
Tap to Pay Definition
06 - Credit/Debit selection
User must select between “Credit” or “Debit”, with clear visual indicatio
07 - Installment options (if applicable)
If “Credit” is selected, show available installments with per-installment value and total
08 - “Continue” button
Only enabled after selecting both payment type and number of installments (if required)
Mandatory:
Payment options must comply with card network and terminal rules.
Checkout via NFC
NFC prompt screen
Must show final amount and payment type (e.g., “Credit – one-time”) with clear illustration of card or phone proximity gesture.
Mandatory:
The system must wait for NFC proximity and process payment automatically upon detection
Mandatory Messages
When no amount is entered:
Please enter an amount to continue.
When NFC is not detected:
No contact detected. Please adjust the positioning and try again.
Expected Behaviors
The full flow must be concise (maximum 5 steps before payment).
All values and options must be clearly visible at every step.
The user must be able to correct inputs before final confirmation.
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