BigBoss 🇪🇺 If you live close to the border it might indeed be interesting for you. Viacash has many different partner stores. You can go their website here: https://www.viacash.com They have a map to search for partner stores. In my experience, big chains work the best: REWE, Penny, dm.
Most of the time it works very well but sometimes staff does not know exactly what to do. In Germany the viacash service is also known as Barzahlen, so you can tell them that you have a Barzahlen barcode that you want to scan. It does not require any purchase of other items at the store. And it does not always work at self-checkout, so you might need to go to a normal cashier.
Also make sure to read the FAQ here: https://together.bunq.com/d/14531 :)
