The Stripe Android Sample Code by Stripe presents how to integrate payments. Developers can learn how to collect credit card information from a user. Full documentation is available at https://stripe.com/docs/mobile/android
BIPS, Bitcoin payment system, allows users to buy or sell online using Bitcoin digital currency. In addition to Bitcoin transaction-based apps and an e-wallet, BIPS provides an API that users can integrate with existing workflows and tools. Merchants can utilize Bitcoin currency alongside traditional currency transactions.