Shift4 (NYSE: FOUR) has launched Shift4 One, a handheld device that combines payment processing, dynamic currency conversion, and tax-free shopping into a single unit, according to a company press release.

The product is the first jointly developed offering following Shift4's acquisition of Global Blue, a tax-free shopping provider. Shift4 One launched initially in the UK, Ireland, Spain, and Germany, with plans to expand to 15 European countries by the end of 2026.

The device automatically detects when a transaction is eligible for currency conversion or a tax refund, removing the need for manual paperwork. When an international shopper makes a purchase, the system offers to process the payment in the customer's home currency and calculates any applicable tax refund at the point of sale.

According to the company, merchants with automatic eligibility detection typically record twice the tax-free transaction volume compared to those without the feature.

Shift4 CEO Taylor Lauber said in a statement: "Travelers are often unsure about exchange rates or how to submit for tax refunds they're entitled to. Shift4 One eliminates that uncertainty and makes shopping abroad as simple as shopping at home."

The product is aimed at small and medium-sized businesses serving international customers.