Remember the MCX Consortium, the competing transaction processing system from Walmart, et al? One of their high profile members is Best Buy. As a reminder, there was a lot of discussion when MCX started out about members being restricted from taking Apple Pay.

From today’s Apple earnings call, courtesy of Serenity Caldwell’s transcript:

We’re seeing great momentum with Apple Pay: Discover announced today that its cardmembers in the United States will be able to make contactless payments in participating stores through Apple Pay beginning this Fall. And last month, we said that the number of locations accepting Apple Pay has tripled, and we continue to see great progress with merchants. Best Buy, which has been a longtime strong partner of ours, has just announced that it’s now offering Apple Pay in-app, and later this year will offer Apple Pay in all of their U.S. stores.

This is a pretty solid crack in the consortium.