By the way, there is a lie detection equipment that examines the degree to which the keyboard is pressed. But I did not use it. And I use the way a man writes a manuscript. By the way, one of the important elements in this is not only the subject with his certain state, but also on what he writes (several sheets of paper should be placed), the only way to calculate the pressure. A person should not be distracted from writing a document. Natural breaks occur on how he listens to you from the security question and answers it. Many do not like the letter of order and they do not write in thought the new paragraph. It is necessary to require this from the subject. Many write with a strong slope of the lines on the sheet (more than 15 *). The program calculates this slope poorly. But you can not put a stencil. The test subject must write evenly. Pens with light ballpoint ink will not work, helium pens or pencils will not work either, you cannot also change the pen while writing a document. It is impossible to very close (close to one or another edge of the sheet), this will also cause additional difficulties when calculating. You cannot dictate anything to a person while writing a document or rant with him. (the exception is control questions) which it is advisable to read to oneself and not show them to the test subject, this will cause him some psychological anxiety, which we need from the test subject. A person can write in any language using the Cyrillic and Latin letters. If the language is not Russian, please send a translation of the text. I will need it for calculation. These are not tricky rules. As for the rest, the message to the person that he write the document is not tricky: "We have suspicions about you, please explain what you think about this (on paper)."