Depending on how you look at it, Facebook is either planning to become a partner or a rival to existing mobile payment services like Apple Pay, Android Pay, and others. The social service is planning to being offering in-store purchases through its mobile Messenger app, and has indicated it would be willing to partner with some of the current players in the virtual-wallet space. Using a partner that has a good reputation for transaction security, such as Apple, would reassure users hesitant to share credit-card information with Facebook.