The present disclosure provides a method, terminal, and system for authentication with respect to an application. The present techniques may be applicable at a terminal with near-field communication function. When a particular operation of the application is triggered, a near-field device within a certain distance of a terminal is detected. An identification of the near-field device is obtained. The identification is sent to a server to request the server to determine whether the near-field device is a particular near-field device corresponding to the particular operation. A result of authentication performed by the server according to the identification is obtained. A following processing is applied to the particular operation according to the result of authentication. The present techniques ensure safety of operations of the application operated at the terminal.