Austin-based Wincor Nixdorf Inc. June 20 announced that it will exhibit a peripheral interoperability demonstration at Retail a whole s 2002. The demo allows retailers to elect any combination of devices from a form into groups of connected POS printers, scanners, and rod displays, then run a transaction using their selecteded peripheral set. The demo will take place Wincor Nixdorf's booth No. 500 at the Retail