This is an example application for interacting with bluetooth pulse oximeters using an AWS Amplify web front-end and AWS Serverless backend. The Amplify front-end uses web bluetooth to interact with the device and make calls to the backend to store a user's oxygen levels and pulse rate in an Amazon DynamoDB table.

The full guide can be found on the AWS Compute Blog https://aws.amazon.com/blogs/compute/building-a-pulse-oximetry-tracker-using-aws-amplify-and-aws-serverless/