Web SEO specialists, such as Rapidpage.ca, can activate tracking mechanisms on your website using tools such as Google Analytics. These tools track visitor information on every page of your site so you know how many times a page has been viewed, what type of browser the visitor was using (even if they used a smartphone, tablet, etc.) and the geographic location (such as country) of the visitor.
Yahoo have a similar service called Yahoo! Web Analytics.
There are also some free tools which the experts at Rapidpage.ca can also help you install on your website.