Wal-Mart files suit against Visa over chip cards
May 11, 2016 at 12:49 PM EDT
Wal-Mart Stores Inc. (NYSE: WMT) is suing Visa Inc. (NYSE: V) over its chip-enabled debit cards. In its suit, the Arkansas-based discount retailer claims Visa is forcing it to allow customers to use a signature, rather than personal identification numbers (PIN) that make the transaction more secure...