1. A system comprising: an image sensor configured to transmit a first signal comprising data associated with a user's orientation with respect to the image sensor; an orientation sensor configured to transmit a second signal comprising data associated with the image sensor's orientation with respect to gravity; a processor in communication with the image sensor and the orientation sensor, the processor configured to: determine an ergonomic measurement of the user based at least in part on the first and second signals; and transmit an ergonomic signal based at least in part on the ergonomic measurement; recognize a facial feature of the user based at least in part on the first signal; measure a first feature angle between the facial feature of the user and a first axis associated with the orientation of the image sensor based at least in part on the first signal; measure a first sensor angle between the first axis associated with the orientation of the image sensor and gravity based at least in part on the second signal; correct at least a first portion of the ergonomic measurement by subtracting the first sensor angle from the first feature angle; and an output in communication with the processor and configured to provide a message to the user based at least in part on the ergonomic signal.