I want to get user info like (monitor size, IP, etc) on the browser/client-side and send them to the server-side, but the problem is that can some user change our front-end code and prevent his user info to be sent to the server?
another example is that I want to calculate some information for a user and then send them to the server but I won't receive cheat information to the server from manipulated data in the browser side by a tricky user.
"so, is it possible for users to change our written code in the front-end to send their desire information to the server instead of calculated progress data which has performed by the real code?"