Although self-checkout technology has been around for about 15 years, cashiers have not yet needed to worry about being rendered obsolete. Many stores have added self-checkout, but a clerk still has to be stationed in the area to help with problems. While self-check technology has improved immensely over the years, it still has not caught on to the extent that folks originally projected. In this article, the authors discuss their library's journey down the self-check road. They share lessons learned along the way and offer tips for making such an experience more successful.