Japan’s stablecoin payments experiment is moving from blockchain demonstrations toward the checkout counter, with Lawson testing USDC, USDT and JPYC through an existing point-of-sale system.
The second Lawson stablecoin payment trial, conducted on August 17, tested whether customers could use multiple stablecoins and blockchain networks without forcing stores to replace their existing payment infrastructure.
Polygon was among the networks used in the trial, alongside Solana and Morph. The demonstration is significant for Polygon because it places the network inside a real-world retail payment experiment involving one of Japan’s largest convenience-store operators.
The trial does not mean Lawson is launching stablecoin payments nationwide. Lawson representatives described the initiative as a preliminary experiment designed to determine whether stablecoins could eventually withstand commercial use and to identify the technical and economic challenges that would need to be solved first.
Polygon Enters a Real-World Stablecoin Payment Test
The demonstration was conducted by Netstars, Lawson and other participating companies at the Lawson Gate City Osaki Atrium store in Japan.
Netstars integrated its Stablecoin Pay service with Lawson’s existing POS system. The objective was straightforward: determine whether stablecoin payments could operate through the same retail infrastructure already used for conventional barcode payments.
The system supported three stablecoins: USDC and USDT, both denominated in U.S. dollars, and JPYC, a yen-denominated stablecoin. USDC and USDT were tested across Solana, Morph and Polygon, while JPYC was tested on Polygon.
MetaMask was used as the wallet interface during the demonstration. Customers accessed a Netstars website through the MetaMask browser, connected their wallets and generated payment codes corresponding to the stablecoin and blockchain they wanted to use.
Related: Polygon Powers New Stablecoin Rewards Program for One of Japan’s Largest Utility Companies
Importantly, Lawson did not need to install a completely new payment interface for the experiment. Employees selected an existing barcode-payment option, scanned the customer’s payment code and allowed the POS system to automatically identify the payment method before sending the information to Netstars.
This architecture highlights an important issue for mainstream crypto payments: merchants do not necessarily need to interact directly with blockchain infrastructure.
Instead, blockchain transactions can potentially operate behind existing payment systems while merchants continue receiving the currency they already use.
In this trial, stores were settled in Japanese yen rather than receiving stablecoins directly. Customers supplied the digital assets, while Netstars handled the payment processing and settlement arrangements.
The reported payment tests generally completed within about five seconds, according to Netstars executives interviewed during the demonstration. That matters because checkout speed becomes particularly important in high-volume retail environments, where even small delays can create queues.
The experiment also tested how the system behaves across different payment scenarios, including errors and multiple combinations of stablecoins and blockchains.
For Polygon, the significance extends beyond the individual Lawson test. The network is being evaluated as part of infrastructure capable of connecting blockchain-based assets with an existing retail payments environment.
The Bigger Challenge Is Not Blockchain Speed
The Lawson experiment shows that making a stablecoin payment at a physical store is technically possible. But it also demonstrates why widespread adoption will involve considerably more than simply putting a blockchain wallet next to a card terminal.
One of the most important issues is settlement.
Customers may hold USDC or USDT, while Japanese merchants ultimately need yen. The payment infrastructure therefore needs a reliable mechanism for converting digital-dollar assets into the local currency.
Netstars said the specific mechanism for converting USDC and USDT into Japanese yen has not yet been finalized. The company is discussing the treatment of USDT with Japan’s Financial Services Agency and still needs to determine how the assets received from customers will ultimately be converted into yen.
JPYC presents a different situation because it is yen-denominated. Using a yen stablecoin eliminates the foreign-exchange component associated with dollar-denominated stablecoins.
There are also transaction-cost considerations.
Customers do not need to hold the native gas token of every blockchain used in the demonstration. Netstars temporarily covers the required gas costs and incorporates them into a handling fee.
Related: Polygon Selected by Bank of England for Digital Pound Lab Stablecoin Test
For USDC and USDT payments, that fee can include both blockchain-related costs and foreign-exchange expenses. The resulting cost structure could become an important factor if stablecoin payments eventually move from demonstrations to everyday retail use.
The experiment also raises questions about wallets and user experience.
For the demonstration, customers interacted with a payment website through MetaMask. Netstars indicated that future versions could improve the process by allowing stablecoin payments to be launched directly from wallet applications.
That could be crucial.
Most consumers are unlikely to care which blockchain processes a payment. They care whether paying is fast, understandable and cheaper or more convenient than the alternatives.
That makes the infrastructure underneath the payment less important to the customer but more important to businesses building the system.
For Polygon, this is where the Lawson experiment becomes particularly relevant.
If blockchain payments are eventually integrated into conventional retail infrastructure, networks that can provide predictable transaction costs, sufficient capacity and developer-friendly payment infrastructure could become part of the underlying settlement layer.
The Lawson trial remains only an experiment, and there is currently no confirmed timetable for commercial deployment. Lawson executives said future decisions will depend on market demand, user requirements, store needs and economic considerations such as fees.
Related: Polygon Announces New Wave of Stablecoin, Identity and RWA Developments
Nevertheless, the direction is notable.
Japan is testing whether stablecoins can move beyond exchanges and crypto applications and become usable at ordinary retail checkouts. Polygon’s participation puts it directly inside that experiment.
The most important question is no longer simply whether stablecoins can transfer value onchain. It is whether consumers can use them without having to think about the blockchain underneath.
If companies such as Lawson can eventually connect stablecoin wallets to existing POS infrastructure while merchants receive yen as they do today, the blockchain component could become almost invisible to the customer.
That may ultimately be the more important milestone for Polygon and the broader stablecoin market.
Crypto payments do not necessarily need to look like crypto payments to become mainstream.
About The Author
