1. A system for maintaining a sensor, comprising: a sensor capable of being attached to a user's body and comprising: a transceiver configured to transmit data, and a sensor attention indicator configured to generate a visual output or an audio output in response to receiving a sensor attention indicator activation command; and a base station adapted to receive the data from the sensor, the base station comprising: a fault-detection system adapted to detect a faulty operating state of the sensor, and a decision engine coupled to the base station and adapted to transmit the sensor attention indicator activation command to the sensor based on an indication of the faulty operating state from the fault-detection system.