US Patent 9223951 User authentication based on other applications

The present invention includes a system for authenticating a second action based on a first action, wherein the system is configured to: receive a first request to execute a first action associated with a first application; determine that execution of the first action requires user authentication; request one or more authentication credentials from the user; receive a first authentication credential associated with the first action; validate the first authentication credential, thereby resulting in a successful validation of the received first authentication credential; in response to the successful validation, execute the first action; receive a second request to execute a second action associated with a second application; determine that execution of the second action requires user authentication; use the successful validation of the first authentication credential to validate a second authentication credential so that the second action may be executed.