Preparing work orders electronically in the field means more work orders finished per day. The technician is able to prepare the work order when the work is complete. The system recognizes written signatures for both the tech and the customer. There is no question of approval for invoicing. The tech is able to use handy pull down menus showing parts and labor rates. He merely points and clicks to enter data into the correct field. Once the work order is complete, it is electronically sent to the home office for billing. Invoicing is a one-step confirmation of the work order.