Review: Since Discover's national launch in 1986, the company has continuously been a leading innovator and driver of change in the credit card industry. From the outset, Discover has worked to expand the network, which connects millions of merchant and cash access locations, as well as markets and supports a full range of credit, debit and prepaid cards. The company's track record of pioneering accomplishments includes the introduction of cash rewards, known as "Cashback Bonus" - America's #1 Cash Rewards program, according to TNS 2008 Consumer Card Strategies Research data that shows more U.S. households have a Discover card than any other cash rewards card. Discover card was one of the earliest to offer 24/7 customer service and secure account numbers for online purchases.