Setup and operation

2.1 Payment

1. The merchant initiates a payment request on the POS Terminal, and the user confirms the payment amount on the screen.
2. After verifying the amount is correct, place the payment card near the NFC induction area and hold it steady for 1-2 seconds without moving it.
3. A beep indicates successful card reading, and the screen displays「Card signed. You may remove your card now」. At this point, the card can be removed.
4. Once the transaction is completed and confirmed on the blockchain (typically 1-5 seconds), the screen displays「Payment Received」and shows the transaction hash.
5. The POS Terminal automatically prints a receipt.

6. After payment is completed, the balance change can be viewed in the App.

   

Note:

*If the blockchain network is congested or network quality is poor, transaction confirmation may take longer; please wait patiently.

*The current version of the App does not support transaction record inquiry. To check transaction records, please copy the USDC Deposit Address and query it on a blockchain explorer.

1.1 Obtaining a PAYDAO Card

Currently, the PAYDAO Card is provided as a bundle with the PAYDAO POS Terminal and is not available for individual purchase. Please apply for it at merchants that support PAYDAO.

1.2 Activation Process

Step 1: Card Activation

1. Visit a PAYDAO-supported merchant and have the merchant complete on-site activation using the PAYDAO POS Terminal.
2. A payment account will be created immediately upon activation and can be used right away with no approval waiting period.

Step 2: Link to the App

1. Download and install the PAYDAO App (available on the iOS App Store and Google Play).
2. Open the App and tap the "+" icon in the bottom right corner.
3. Tap Scan Card, place the card on the phone’s NFC area and hold it steady for a few seconds without moving it.

4. Once binding is complete, relevant card information will be displayed.

   

1.3 Top-up

• Copy the USDC Deposit Address.
• Transfer USDC to this address using any Web3 wallet that supports the Solana Network.
• After the top-up is completed, the USDC balance will be displayed in the App.

Note:

*Multiple PAYDAO Cards can be linked to the App simultaneously.

*Stablecoins deposited by users can only be used for payments and do not support withdrawal functions.

2.1 Power On and Preparation

Step 1: Insert Authorization Card and SIM card

1. Open the battery back cover.
2. Insert the Authorization Card (PSAM/SIM-1 slot).
3. Insert the SIM Card (Nano SIM slot); skip this step if using WiFi.

4. Close the battery back cover.

   

*The POS Terminal has a total of 4 slots. The Authorization Card should be inserted into slot 1. Please note that slots 1 and 2 are dual-layered, one above the other, with slot 1 on the lower layer.

Step 2: Power On and Network Connection

1. Press and hold the power button for 3 seconds.
2. Wait for the system to start (approximately 30 seconds).
3. Enter the device activation interface, where New Card Detected will be displayed.
4. Navigate to the 「Settings」 interface.
5. Select 「Network & internet」.
6. Select WiFi and enter the password (if using WiFi).
7. Wait for the connection to be established successfully.

2.2 Activation and Configuration

1. Click the Home icon at the bottom of the screen to return to the device activation interface.
2. Click Continue to enter the address setting interface.
3. Scan the code or enter the Merchant Withdrawal Address and Installer Reward Address.

4. Click Confirm to complete the setup and enter the PAYDAO application interface.

   

Important Note:

*The above addresses must be accurate; once set, they cannot be changed.

Step 1: Enter Amount

1. On the PAYDAO application interface, enter the collection amount (quantity of stablecoins).
2. Click the Pay button at the bottom of the page.

3. Enter the waiting for payment interface.

   

Step 2: Card Transaction

1. Instruct the user to place the payment card near the NFC induction area and hold for 1-2 seconds; do not move it during this process.
2. A "beep" sound indicates a successful card read, and the screen will display 「Card signed. You may remove your card now. 」; at this point, the card can be removed.
3. Once the transaction is completed and confirmed on the blockchain (typically 1-5 seconds), the screen will display 「Payment Received」 and show the transaction hash.
4. The POS Terminal will automatically print a receipt.

5. Click Back to return to the PAYDAO application interface.

   

Note:

*If the blockchain network is congested or the network quality is poor, transaction confirmation may take longer; please wait patiently.

1. On the PAYDAO application interface, click the「 ⋮ 」 icon in the top right corner and click 「Withdraw」.

   

2. Under USDC Received, the Balance will be displayed, representing the current withdrawable stablecoin balance.

   

3. Click 「Withdraw」 and enter the withdrawal amount for a partial withdrawal, or click 「Withdraw All」 for a full withdrawal.
4. The corresponding funds will be withdrawn to the previously configured Merchant Withdrawal Address; the address and balance can be verified on this interface.

Note:

*Once a user's payment transaction is completed, withdrawals can be made at any time with no limit on the number of withdrawals.

1. On the PAYDAO application interface, click the「 ⋮ 」icon in the top right corner and click 「Activate Card」.

   

2. Place the unactivated card on the NFC induction area of the POS Terminal and hold for a few seconds; do not move it during this process.

   

3. Once the card is successfully activated, the following interface will be displayed.

   

4. Click 「Activate Another Card」 to begin activating the next card. If no further activations are required, click the arrow in the top left corner to exit.

Important Note:

*User payment cards must be activated on the POS Terminal; otherwise, they cannot be used.