Breadcrumb by Groupon is an iPad point of sale system for restaurants and bars. I worked as a senior designer across all aspects of the product including iPad app design, responsive web design, UX research, A/B testing, and much more.
Here's some PIN screen explorations. This is a simple screen, but one of the most important for the product because it is what restaurant staff and customers see when the point of sale is asleep. It's the face of the product, and we wanted it to look sexy on a dimly lit bar, nightclub, or restaurant.