Ключевые слова: abstract, authenticate, background, banner, bicolor, biometrics, breathing, button, clinic, corona, coronavirus, covid, defence, depression, difficult, face, facial, fever, guard, head, human, icon, identification, injections, isolation, man, mask, medical, mental, mind, mood, needle, online, people, period, person, privacy, risk, second, shield, sick, stress, system, two, twocolor, vaccine, virus, warranty, yellow,