[Technology] QR Code Scanning / Web Application Development

I developed an app that uses a WEB API to read QR codes and send them via POST in JSON format. The app can read QR codes on both Android and iOS, making it platform-independent.
【Considerations】
I confirmed that it is possible to read QR codes using JavaScript from a web browser by utilizing the MediaDevices.getUserMedia() API.
【Web App】
1: The app reads QR codes. The following example uses Chrome.
It scans the QR code.
When you press "Open," it returns to the original screen and writes the URL read from the QR code into a field.
You can enter a name and POST the JSON code to the test server.
It returns the content you sent, so it can be displayed.
I was able to read QR codes and send them via POST in JSON format. Without needing to download the app, the browser's functionality has increased, allowing for various tasks to be accomplished.

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