Measure blood oxygen levels at home: A smartphone camera and flash to the rescue

The smartphone’s flash and camera can be used to measure blood oxygen level at home

This technique requires participants to place their finger on the flash and camera of a smartphone. A deep-learning algorithm then uses the video to determine the oxygen levels in the blood.

Asthma or COVID-19 can make it difficult for the body to absorb oxygen. The oxygen saturation percentages will drop to 90% or lower, which indicates that medical attention is required.

In clinics, doctors use pulse oximeters – those clip things you place over your fingertip and ear. Monitoring oxygen saturation multiple times per day at home could help patients monitor COVID symptoms.