Apple CEO Tim Cook said in an earnings call for its fiscal 2015 second quarter on Monday that Apple Pay continues to make progress in terms of user and merchant acceptance.Cook noted that credit card provider Discover had announced yesterday that its cardmembers in the United States will be able to make contactless payments in participating stores through Apple Pay beginning this fall.”As the mobile payments landscape matures, Discover remains committed to giving cardmembers secure options for using their cards and mobile devices,” added Diane Offereins, Discover's president of payment services. “Discover's focus on simplicity and value for our cardmembers aligns well with the way Apple Pay makes purchases easy and convenient.”Electronics giant Best Buy has also said that it will now accept the biometric mobile payment method.”We're seeing great momentum with Apple Pay ߪ the number of locations accepting Apple Pay has tripled, and we continue to see great progress with merchants”.Cook added that a leading healthcare payment network announced acceptance of Apple Pay for its clients, so over 50 major hospitals across the country, including Stanford Healthcare and Aspen Valley, will accept Apple Pay this year for copays and bill payments at registration and check in.Thanks to strong performance by its iPhone, Mac and App Store businesses, the company posted 27% revenue growth and 40% EPS growth, setting records for the second quarter.