Ключевые слова: adult, analysis, background, blood, blue, care, checking, clinical, closeup, compact, device, diagnosis, disease, display, doctor, electronics, gloves, grey, hands, health, heart, level, light, male, man, medical, mobile, monitoring, oximeter, oximetry, oxygen, pandemic, patient, percent, percentage, portable, pulse, screen, spo2, statement, table, technology, test, virus, weakness,