The Feedzai Java SDK by Kill Bill communicates with the API to access fraud detection features. It includes usage in a unit test that presents history of payments as a method to recognize suspicious transactions.
Private messaging app Confide has launched ScreenShieldKit, an SDK that allows developers to use its anti-screenshot technology in their iOS 10 and 11 apps. ScreenShieldKit can protect text, photos, videos and documents from screenshots taken using a variety of common methods.
The Signinghub API helps accomplish something that looks simple (see image below) but is tricky to do securely: digitally sign a document. The API, using REST-based web services with XML responses, makes its possible to incorporate digital signing into your application that is based on the Public Key Infrastructure.