Abstract
A method and an apparatus for task challenge using social cooperation are provided. The method is adapted for a service apparatus to provide multiple client apparatuses to create and join in a task. In the method, a task created by one client apparatus is received and the rest of the client apparatuses are invited to join in the task. Next, a guarantee provided by each client apparatus joining in the task is received. Then, a specific operation executed on each client apparatus is detected, and accordingly whether each client apparatus completes the task is determined. Finally, a manipulation of the guarantees is determined based on whether each of the client apparatuses completes the task.