The use of portable receipt printing in mobile computing is often used in the field. Companies such as Sears Roebuck are putting computers in the hands of field service technicians to make them more efficient and to streamline and speed basic functions, such as billing; and to save millions of dollars. The retailer's HomeCentral operation is the largest appliance repair firm in the United States, with over 13,000 technicians who make 11 million in-home repairs a year. The hardware used by the field service technicians includes sturdy laptops and portable printers; and Sears' service vans have been converted into wireless network base stations.
Another good example is Calor Service, one of Italy's most important companies working in the servicing of heating and air conditioning systems. Calor Service adopted mobile computing including portable printers to obtain better day-to-day performance by their service technicians. Calor Services is the Official Service Centre for Caldaie Beretta: one of the most famous Italian manufacturers of heating and air conditioning devices.
Extech Data Systems, a division of Extech Instruments, (www.extech.com) is one of the world's leading developers of portable printers for enterprise-wide applications focusing on mobile information and remote transactions.
Extech Instruments is one of the largest suppliers of test equipment and portable printers worldwide. Founded in 1971, Extech is known for its innovation in providing instruments with unique combinations of features that make them highly useful and very convenient. The Instruments Division offers over 14 major product lines that are sold through leading catalog houses and local stocking distributors in the US and through master distributors internationally. The products are used in a wide variety of markets.