RetailEdge is not designed to work with a touchscreen. Most of our customers have inventory items that are tagged with a barcode and have large inventories that would make using a touch screen not as fast an efficient as barcode scanning or typing in an item number.
However, we do have customers that are using RetailEdge with a touch screen. One customer (Cider Hill Farm) has converted all their registers to touch screens and has purchased a program that allows them to create a virtual keyboard. They say it works great. A picture of how it works is listed below.
This virtual keyboard program can be purchased from MountFocus Information Systems at
http://www.virtual-keyboard.com/ and costs only $97.00 for a five workstation license. If you have a number of items that can't be tagged (like produce) or have limited inventory (coffee shops), this might give you what you need.