A method comprises receiving a signal containing an environmental cue;
correlating the environmental cue to a user interface control element;
and generating a user interface control command based on the
environmental cue. A device may be controlled by receiving a visual
image, processing the image to identify a visual cue, correlating the
visual cue with a user interface control, and controlling the device
using the user interface control. The visual image may be received from a
camera that is part of an automobile, and the user interface control may
include a control for a radio to tune to a radio station; a speed control
for controlling a speed of the automobile corresponding to a speed sign
visual cue; or a navigation system control for controlling a navigation
system based on traffic signs. Other variations include an apparatus and
computer-readable media including instructions for performing the
methods.
