Elixir doesn’t run in the browser, it runs on the server. If you want to trigger the webcam of the user in their browser you’ll want to use some javascript. Once the image has been taken, you could send the image data to your Elixir server any number of ways depending on whether you’re doing an API, LiveView, or something else.

Hi @RKC07 in order to help we need to understand where you are in you learning process. Are you at a point where you can comfortably make a simple Phoenix app at all? What is a “webcam web app”? What does it need to do?

Hi @RKC07 , I played around with Nerves for this once and took some notes: Using Nerves with Rpi3, wifi and Picam. | by Paulo Daniel | Medium. I imagine things are fairly out of date, so beware. At the time, it worked .