1. A method comprising: (a) providing a presence device associated with a communication device, the presence device operable in a first mode and a second mode; (b) if the presence device is operating in the first mode, biometrically authenticating a user using the presence device and receiving a presence confirmation input from the communication device; (c) if the presence device is operating in the second mode, receiving a user-entered log-in input from the communication device; (d) in response to (b) or (c), updating a central presence database to indicate that the communication device is active for the user; (e) receiving at least one message to be routed to the user; (f) using the central presence database to determine that the communication device is active for the user; and (g) sending the at least one message to the communication device.