It is EXTREMELY clever and creative — as one has come to expect from Google.
No swabs. No blood tests.
You just cough onto the rear-facing camera. That is IT. You cough on the camera.
The APP software, using the powerful AI built into the camera module, will then ENLARGE and analyze the cough particles. It basically acts like a powerful microscope. Once it has your cough particles enlarged enough the AI software scans it to see if it matches the ‘fingerprints’ of COVID-19. It does this in seconds.
The test is said to be 76% accurate. So, not foolproof BUT better than nothing.
It is already being tested by the FDA and CDC for approval. The goal is that it will be available for download, from the Google Play Store, by this weekend. WOW.
Yes, and ALAS, it will initially only work with Google Pixel 3s & 4s. That is a shame. It is just that most other cameras do not have the hardware or software to support the necessary magnification.
P.S., It is recommended that you use a disinfectant wipe to clean the camera after the test.