We live in hard times. The corona crisis has affected everyone. Shopkeepers especially. Customers stayed at home and many stores closed their doors. We, four young bachelor and master students (ranging from counter-terrorism and business to mathematics and physics) asked ourselves the following question: How can we get shop owners to open their doors in an appropriate and safe manner and have customers shop safely? After long brainstorm sessions we found a solution to save the retail sector. The solution? ShopTiming.