Visa Puts Signature On Skirmish With Retailers

Visa filed a suit against Walmart June 30, the latest volley in a legal shootout with large retailers over EMV, chip-and-PIN and signature policies. "To me, it's a clear escalation in the battle, said Rick Oglesby, president of AZ Payments Group and a partner at Double Diamond Group. "It's never a good thing to be wrapped up in a public dispute with one of your largest and most influential customers, and the networks versus Walmart has been ongoing for many years."

The suit claims Walmart surreptitiously tested a process in which shoppers were not given the choice to verify their Visa debit card purchases with a signature. It's the most recent salvo in a battle among Visa and large retailers over the use of either signatures or PINs to verify transactions.