Users in Germany can now use their Samsung Galaxy smartwatches to make purchases via Samsung Pay. A one-time setup is required via a linked Android smartphone. After that, one only requires to enter a PIN to authenticate every transaction. Only a handful of Galaxy Watch and Galaxy Watch models support it, for now.
https://www.notebookcheck.net/Samsung-Pay-now-works-on-the-Galaxy-Watch-Active-Galaxy-Watch-and-others-in-Germany.526235.0.html