Ключевые слова: ability, accessible, application, comfortable, convenience, ease, easy, efficient, effiency, electronic, ergonomic, friendly, functionality, goofproof, interact, interaction, interface, intuitive, learnability, manual, modern, motivational, positive, program, service, simple, simplicity, smart, software, system, tech, technology, usability, usable, use, usefulness, user, userfriendly, utility, way,