Almost everyone at present, except people from the older generation and toddlers, has and is able to use different electronic devices. The most important reason why it is so, is that they are created in such way that a lot of people learn to use them using only their intuition. Consequently, in most of them miscellaneous courses or even reading the user’s manual is unnecessary. Demand on such commodities is still increasing, which can be explained due to the fact that they offer us an opportunity to solve various tasks much quicker and comfortable.