There is self-checkout and then there is self-checkout. Many groceries, pharmacies, and big box stores enable shoppers to go to a checkout area to scan and bag their own items, similar to a regular checkout lane cashier. But this type of self-checkout is really more of a self-service feature compared to the more advanced autonomous checkout systems such as Amazon Go.
Entering 2020, we will see more developers rolling out true autonomous checkout systems for retailers that will put a stop to shoplifting. Vendors to watch include: AiFi, Grabango, Standard Cognition, and Zippin. Others will surely follow. A Money article, excerpted below, discusses more on the topic… Payments Journal