queue-busting
n.β Β«The companyβs Micro Kiosks allow customers to check prices and can provide advertising and specific promotions. One Symbol portable product has let sales clerks at Apple stores ring up customers standing in lineβa practice known as queue-busting.Β» ββIn store for you: more convenience” by Keiko Morriss Newsday (Long Island, New York) Nov. 5, 2006. (source: Double-Tongued Dictionary)