Web access to usb devices is an on-again off-again capability. Word is that it is on-again. Let's find out how.
Access USB Devices on the Web (2016). post 
WebUSB API
Editor’s Draft, 3 February 2019. github
The USB interface of the WebUSB API provides attributes and methods for finding and connecting USB devices from a web page. mozilla
Google disables WebUSB in Chrome amidst phishing concerns. post