Apparatuses may be configured to provide feedback to a user, who may be visually-impaired. In one implementation, a method for using the apparatuses provides this feedback to a visually impaired user. The method comprises receiving from a mobile image sensor real time image data that includes a representation of an object in an environment of the visually impaired user. The mobile image sensor is configured to be connected to glasses worn by the visually impaired user. Further, the method comprises receiving a signal indicating a desire of the visually impaired user to obtain information about the object. The method also includes accessing a database holding information about a plurality of objects, and comparing information derived from the received real time image data with information in the database. The method comprises providing the visually impaired user with nonvisual feedback that the object is not locatable in the database.
