The V-R100 comes with a preinstalled sales management application that supports efficient check-out operations. It enables PLU registering as well as the recording and totaling of sales data. Once a product name and unit price have been entered in the system, the operator inputs the price by simply touching the product name on the screen. Sales by product and other information can be confirmed on the screen, a feature useful in sales management and merchandise control at restaurants and shops. In addition, Android supports independent development of custom applications. With the V-R100, ease of use can be customized for specific operations and industries. This is for the unit only, we don't have any experience operating the unit. See below for the manual. We bought this unit a few years ago for over $1500 and never used it. https://www.aniluin.com/manual/vx100/VX-100%20Dealers%20manual_Stdstyle_ENG.pdf