Open your Walmart app, select Services > Walmart Pay > Set Up Walmart Pay. Create a Walmart.com account, or sign in to your existing account. Select Add Payment Methods and enter your Discover card details. Agree to the Terms and Conditions, follow prompts to verify proper set up, and create a Walmart PIN. The contactless Discover ® Card offers the latest payment technology to help you make fast, easy, and secure payments with your card at checkout. To make a payment, you simply tap your contactless Discover ® Card at checkout. The card can also be inserted into the card reader or swiped, in the event the cashier or the card reader indicates you should do so. See all the ways we can help you achieve your debt consolidation goals. Personal Loans. A personal loan from Discover of up to $35k can help you consolidate higher-interest debt or afford a large purchase. $0 origination fees, a fixed monthly payment and no prepayment penalty. Estimate your payments today with our personal loan calculator.