Design an interface for controlling a robot vacuum cleaner.

1. Describe the individual tasks that has to be performed by the robot.

2. Describe the interactions necessary to control the robot.

3. Propose a suitable conceptual model. (with sketches needed)

4. Describe the physical design and the interaction modes that would be appropriate for different tasks. It is okay to get an existing design from online as an example.

5. Justify your choices.