При проверке деятельности частного детективного

When checking the activities of the private detective enterprise Sokol, the head of the LRR department asked the budding detective Popov a question: “What are the limitations in the scope of the private detective?”
  What answer should Popov give to this question?

After payment you will be available a link to the solution of this problem in the file of MS Word. It should be noted that the problem solutions put up for sale were successfully handed over in the period 2004-2019 and could be outdated. However, the general algorithm will always remain true.