How will Apple Pay affect other mobile payment apps?

Apple Pay, the company's new mobile payments platform, will be launched first in the U.S., where it will most likely create considerable interest among the many other players in the mobile payment sector that have already been working with developers to integrate payments into apps. These include traditional credit-card firms, such as MasterCard and Visa, which are also Apple Pay launch partners, and pure-play online-payment firms, such as eBay's PayPal. Developers who want to offer payment capabilities in their apps may now be spending more of their time considering the various options and what will work best for their customers. For more on this topic, check out this FierceDeveloper special report.