The Square Register In Person Payment Android Sample Code by Square demonstrates how API interaction can assist to process credit card payments. Registration for API Key available at https://docs.connect.squareup.com/articles/register-api-android/#registerapisetup
Facebook developers--all one million of them--can now monetize their apps using PayPal. The new partnership between the companies was announced at PayPal X Innovate, the online payment service's conference. PayPal's new micropayments will be integrated into Facebook for its virtual currency.