An apparatus comprises a sensor configured to detect movement and generate movement data related to at least part of a detected movement; a messaging unit configured to create a message that is configured to include movement information based at least in part upon the movement data; a transmitter in data communication with the messaging unit and configured to transmit the message; and a housing configured to at least partially enclose at least one of the sensor, the messaging unit, and the transmitter, and including a finger grip configured to secure the housing to a human finger. Methods of using the apparatus are also provided.