USPS is testing a new mobile point-of-sale (POS) technology designed to reduce wait-time-in-line for most routine retail transactions. The new technology — Mobile Point of Sale, or mPOS — uses a modified iPod hand-held device and printers. With mPOS, lobby assistants can scan and accept prepaid packages, scan package pickups as delivered, or sell stamps, ReadyPost and other retail products. Retail associates also can use mPOS to sell Priority Mail flat-rate postage. During the holiday season, the 50 facilities testing mPOS processed more than 102,000 transactions using the technology. A retail associate can accept payments with mPOS by swiping credit cards and non-PIN debit cards. A customer can choose to accept a hard-copy receipt or have one emailed to a personal email address. The mPOS system consists of three pieces of equipment — the iPod hand-held device, a portable receipt printer and a postage printer.