hi,
in mobile devices this function should be disabled and you will see only a upload file field. if you see crop and webcam then please report phone model.
in future we will move on another technology, but now only alternative is getUserMedia/Stream API, unfortunately this Api is not supported by popular desktop browsers like internet explorer (on chrome is partially supported). So for now no choice
in a first step we will add a options to disable webcam upload (only crop). with this
you can choose between webcam feature or maximum compatibility.