The present invention discloses methods and systems for performing at least one action at a system according to a user's gesture information. The required steps comprises of capturing the user's gestures information by a mobile apparatus, wherein the apparatus comprises an antenna, a processor, a storage medium, at least one accelerometer, wherein the accelerometer has at least 3 axis; comparing gesture information against one or more predefined gesture information at the mobile apparatus and when the gesture information matches a predefined gesture information, the mobile apparatus selects a first identity based on the predefined gesture information, sends encrypted information to a system through a reader wherein the encrypted information comprises the predefined gesture information, the first identity, a timestamp, and a device identity. The system performs at least one action according to the encrypted information. When the gesture information does not match any pre-defined gesture information, the mobile apparatus sends a failure notice to the user. The mobile apparatus or device does not send the encrypted information unless the device is physically close to the reader by a first wireless signal strength.