How to observe another user activities on webpage

Question

I have to create a web page, where all activity of some user will be seen by second user. Simply, the second user see everything what the first user is doing at his page.

I know, that It is possible using AJAX or Websockets, but I' m interested in simpler solution.

Do you know any simple solution, which enables to intercept frame of another user?

I had browsed many pages, but I haven't found satisfactory solution.

I assume that I control the source code of this application.

I greatly appreciate your help.

Answer 1

Check out Mozillas TogetherJS.

It is a solution for users interacting with a page together in realtime; it might do what you are trying to achieve.