It adds a shortcode to collect the information of the browser used by the visitor.
No options for this plugin. On the pages where you add the shortcode [collect_browser_info], the visitor will see something that looks like:
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36
App name: Netscape
Platform: MacIntel
Cookies enabled: true
Vendor: Google Inc.
Screen available width: 2048
Screen available height: 1152
Screen width: 2048
Screen height: 1152
Viewport width: 1208
Viewport height: 960
So, if someone has problems with your website and you want to know which browser is giving that problem, share the URL of the page that collects the browser information, and ask to send you the collected information about the browser.
You can see how it works visiting the blog post
How to collect the browser information.