**6. Conclusion**

In this article, we introduced a novel method of using stereovision (PLUS) and monovision (PLUM) to locate the position of a pointer on a display unit.

#### **6.1 Benefits of the optical touch screen with virtual force**

There are many advantages of the algorithms proposed in this article.


viewable area quadruples, so is the material used and the computing power needed. In contrast, in the methods introduced in this article, the same two cameras or camera and mirror combination can be easily scaled up or down to screens with different sizes and height-width ratios.

