Abstract: Systems and techniques are provided for an adjustable camera system for mouth tracking. An example apparatus can include a housing with an opening formed in a first side of the housing, wherein one or more surfaces of the housing are configured to engage a head of a user; and a structure including a lens configured to receive incident light, wherein the structure is configured to move from a retracted state where at least a portion of the structure is retracted into the opening in the first side of the housing, to an extended state where at least a portion of the structure that includes the lens structure extends from the first side of the housing.