Emotions play an important role in human interaction with machines. However, as yet machines are not able to measure or interact with these emotions in communication with humans. Standard positioning devices (mouse and keyboard), are noninvasive and economic advantageous, can serve as indicators of emotions. To prove this, a set of software tools for measurement parameters (i=7) from dynamics of manipulations by positioning devices was written and an experiment was planned and executed. The results of this experiment (N=4) showed the changes in the dynamics of manipulations by computer positioning devices: common time of driving by a mouse, duration of key down, duration between key up and next key down values were statistically significantly less for joy in comparison with neutral state. Further researches are perspective. Evaluation of the emotional states on the dynamics of manipulations by positioning devices can use in the humanoperator work to warn different mistakes.