[mcbrienollie]

If the website contains a protection system such as Cloudflare, Perimeter X or similar, they run a small software in your browser called Challenge (which you might seen in Cloudflare also). This software is trying to understand if you are a bot or not by executing a series of internal functions on the browser which is also called Fingerprinting. They usually go hard on microphone, motion sensors, camera, location, navigator (language etc), WebGL and other similar technologies. Bots usually does not contain these functions. In my opinion, that would be the main reason for it.