How website can track users even after clearing browser cookies -

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i banned forum asking first question, indeed stupid one. later created new logins, cleared browser history, changed ip address, still forum catches me , gives warning "you're banned".

how able track me? seems eying me cam.

it ip address, surprised if rely on track given user, given many users' ip address change 1 day next, because of block ip address allocation.

a few other possibilities:

lso (a.k.a., 'flash cookie') not stored in browser-specific directory.

local storage, stored in localstorage directory 1 level below directory each browse, , have extension localstorage (on mac, anyway).

both of these have stored in different directory default browser cookies , both have far higher storage capacity cookies way.

there's nothing inherently 'stickier' either of these versus cookies, other fact not stored in same directory cookies , major version of major browsers include simple user-preference settings remove cookies--i.e., viewing , removing cookies @ end of each session visible menu option.

favicons third possibility--which browsers request before page loaded, if request satisfied, client repeat visitor.

again, there's nothing particularly sticky favicons, other fact not stored cookies (indeed, stored in sqlite database in each browser directory); in addition, no browser among use regularly (firefox, omniweb, safari, opera, camino) includes user-preference setting remove them; moreover, wonder if invisible file managers in operating systems given stored in sqlite database.

finally, consider server knows lot client the initial request headers; indeed, user-agent string, alone, e.g., operating system, operating system version, browser type, browser version, language data, , on. when combined ip address, block ip address, suspect parsed create unique identifier. difficulty here of course, data used create unique identifier becomes more detailed, e.g., recording not using safari browser using safari/5.33.19.4, , applewebkit version ..., becomes less durable, given users update browsers, operating systems, etc.


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