SCAN - The Shared Check Authorization Network For Over 10 years Wal-Mart, Nordstrom, Sears and many other top American retailers have used SCAN to stop bad check writers. Now You Can Join Them. The Shared Check Authorization Network (SCAN) is the most current database on bad check writers in the country. It is updated every night with information from its contributing members nationwide. SCAN is the largest check authorization company in the country, authorizing over $140 billion in checks last year. The more members contributing and relying on this database the more difficult it is to pass a bad check. There is, indeed, strength in numbers. As a retailer, SCAN helps you decide at the point of a sale whether to accept a check or not. It's easy, you can use your existing credit card processing equipment. It's quick, an authorization is received in 8 - 10 seconds. It's affordable, it costs a fraction of what a check guarantee firm charges. It's complete, automatic collection is included on any checks that are returned. It's smart, save money while you stop bad check writers. You'll be in good company These stores use SCAN and contribute all returned check information for their locations to the SCAN database. Wal-Mart, Sears, Nordstrom, Parisian, Kids "R" Us, L.L. Bean, Finish Line, Liz Claiborne, Baby Superstore, Foot Action, Riches, Macy's, Bloomingdale's, Apex, Sport Shoe, Shoe Carnival, Rack Room Shoes, Uptons, Eddie Bauer, Bugle Boy, Famous Footwear, Home Depot, Lowe's, J.B. White, Boston Stores, Lamonts, Bermans and thousands more.