Google Inc. on Monday said it has licensed the right to add virtual "cards" from the three payment networks to its Wallet application.
MasterCard is already part of the project, which allows users to pay for goods and services by using their phones to tap wireless-capable payment terminals in stores.
But so far, it's only available on one Sprint smartphone. It can only be used at a small number of stores.
Google's vice president of payments, Osama Bedier, couldn't say when cards from Visa Inc., American Express Co. and Discover Financial Services would work with the wallet.
In the case of Visa, not only does Google need to work out the technical details of making its wallet compatible, it also needs to get the banks that issue the cards to sign on to the project, like Citigroup Inc. did for its MasterCard.
Google also needs more phones that work with the wallet.
The Associated Press contributed to this report.