Every house today is full of smart appliances, such washing machine, dishwasher, vacuum cleaner, microwave, stereo system, etc. These objects have drastically changed people’s lives. They made it easier to cope with household chores. It seems that new technologies govern the lives of all people on planet. It’s simply impossible to imagine modern life without labor-saving gadgets. A couple of decades ago people had no idea what smartphones or iPhones are, while today nearly everyone has one. It is undoubtedly the best communication and entertainment device. People can connect with each other everywhere they go through social network, text messaging, low-cost calls, chats rooms, etc. It is hard to stay even a day without such handy gadgets.