**5. Conclusions**

The efficacy of the Haptic Desktop to transfer basic skills to drawn simples sketches was demonstrated through the use of two applications, in both the HD acts like a virtual teacher that uses its force feedback and collocated capabilities to retain the cursor's position (controlled by the end effector position) in contact the borders of predefined sketch. The sketch could be either fixed or interactive, the fixed ones are generated from images, and the interactive ones are generated by the user whom can decide where, how big and which primitive geometric element draw (circle, line or arch).

**Part 4** 

**Haptics and Games** 

The experiment described in this chapter, showed that the use of force and visual stimuli helps to the user to drawn the simple sketches more quickly and with less errors, but more work must be done in order to enable to the interface to understand when and how the feedback stimuli have to be generated, to do it, it would be necessary obtain velocities and forces (magnitude and orientation) of the hand users and develop advanced algorithms that recognize the difference between drawn a primitive element as expert or novice. These algorithms are difficult to develop and possibly the variables to quantify the quality of the hand movement could be not enough.
