Scanning Stages

As described in Vital Sign Camera, during the 30-second scan, there are 3 stages:

StageStage	DescriptionDescription
Waiting	A very short and almost not noticeable period after startScanning() API is called, it waits until both the camera and the server are ready.
Collecting Data	Non-PII (aka Non-Personally Identifiable Information) are collected for 25 seconds.
Analysing Data	Data collected (which are all non-PII) are sent to the Vitals™ Cloud Service for analysis, and once the analysis is finished, vital sign results are returned from the server and the scan is completed.

During the Vitals™ scan, there might be errors such as face lost or network errors. With these error thrown, in general, the Vital Sign Camera will automatically stop scanning and return to the Idle state.

In addition, for Measurements Quality Assurance, it is recommended to monitor the conditions check and signal quality yourself. This may require you to explicitly stop the scanning process. In those cases, please use the stopScanning() API. With it called, the Vital Sign Camera will get back to the Idle state and get ready for the next scan.