The battle between PayPal, Square, and Google Wallet to determine which of the competing mobile payment options will reign supreme continues to heat up. Hot off news that it is working with McDonald's to let the fast food giant's customers pay using their mobile devices, PayPal has announced a deal that will see it accepted at retailers that also take Discover Card starting in April 2013.
Accepting PayPal won't require stores, restaurants, and other locations to make any upgrades to their registers. PayPal already has a service called PayPal Here which allows businesses to accept standard credit cards using a card-reading peripheral designed to work with iPhone and Android devices.
One of PayPal's rival in the mobile payment realm, Square, announced a $25 million deal with Starbucks earlier this month that will let customers pay for coffee using their phones and tablets. Discover competitor Visa is a major investor in Square.
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