What information can we access from the client? [closed]

Answer 1

visitor.js is a javascript library that provides information about the client.

Including:

1. Continent, Country and city
2. Date of last visit
3. Referring website or search engine (including search term)
4. Time spent on the website
5. Browser and operating system
6. IP Address
7. Language
8. Browser
9. OS
10. Screen size

And more.

http://www.visitorjs.com/

Visitorjs might be very handy, it's not free however.