Ключевые слова: advise, advisory, alarm, alert, announce, app, application, away, caution, contact, coronavirus, danger, dangerous, device, display, electronic, forbidden, friends, hold, immune, infected, information, keep away, mobile, network, park, phone, privacy, quarantine, restrict, rule, screen, security, service, signal, smart, smartphone, strategy, touch, trace, tracers, tracking, tracking app, using, warning, woman,