In 2013, mobile shopping traffic and sales set unprecedented records. On Cyber Monday, 1/3 of online traffic came from smartphones and tablets. However, analytics companies report conversion rates are only 3% on tablets, and less than 1% on smartphones. This gap between mobile traffic and conversion leaves developers and UX designers with the daunting challenge of more effectively designing for a multi-device world. After conducting thousands of mobile user tests on e-commerce sites, we have uncovered the real problem is not smartphones themselves, but the designs of mobile shopping sites, which often discourage consumers from buying and can actually drive them away. In this presentation, Mike Mace will reveal these mobile design issues, and provide attendees with useful tips and real-world case studies on how to do mobile commerce right.