A wearable smart device for alerting a user of an upcoming turn or object. The wearable smart device includes a camera configured to detect image data. The wearable smart device also includes a processor coupled to the camera and configured to determine a current speed of the wearable smart device based on the image data. The processor is also configured to determine when a navigation instruction is to be output based on the current speed. The wearable smart device also includes an output unit coupled to the processor and configured to output the navigation instruction.
