Ключевые слова: 24 hours, 911, accidental, alert, ambulance, assistance, business, button, call, cellphone, concept, connect, contact, crisis, danger, dangerous, department, design, device, digital device, emergency, emergency call, emergency services, finger, fire, first aid, hand, help, hold, hospital, hotline, injured, medical, mobile, modern, number, paramedic, phone, request, rescue, safe, safety, security, service, sign, smartphone, support, symbol, technology, touch,