The cookies by themselves get server time, not the time from the web browser. So can ActiveX, JavaScript, and Java which can simply be uninstalled. In the comments below, specializt mentioned that WMI can be disabled. Not everyone has their clock set properly but most have them auto-sync with real timeservers especially mobiles. By itself it doesn't give much out though. The solution is to kill JavaScript or change your clock time. If that is different than the time the server sees that would be a 'flag' so to speak. Applications that use real-time like online bid applications do that. When you post from one page to another in a form, it could post the time from javascript, giving away the time zone you are in. Since it was mentioned in the question, JavaScript reads the time from the clock on your system. If your JavaScript is turned off this will not work of course. Regarding IP addresses- JavaScript can use WebRTC (these examples for newer versions of Chrome and Firefox) now to show internal IP addresses as explained in this article: See live working examples here: and one that attepts to detect all ip addresses in your local range here: This is not to be confused with MAC address data. If you are going to a web site for example, in a coffee shop, the IP shown is that of the coffee shop, not a user on the network. just the IP addresses, and even then- users often only show the IP address of their location. Web servers do not generally pass on that information. Here is a question with code to do this in Java on StackOverflow: Īs mentioned in the comment below by Hennes, MAC addresses are internal only. Here is a script using WMI that reads MAC addresses: ActiveX requires WMI is installed for this to work. ActiveX & WMI (Windows Interface via Windows Management Instrumentation) for Internet Explorer and Java are methods used that could pass on a MAC address. So you technically have to give permission first by doing that. ![]() The only web sites that can access MAC addresses, are sites that have you download a software component to interface with them, which allow the site to circumvent the usual rules. Is there an extra way to be anonymized that I can do? For example, can my system clock or anything else give an information?.I wrote them because I read similar advices in some related questions but my question is that can they see my MAC address (or anything else that can make me detected) despite all these precautions. I wrote the information above to mention that I changed IPs and I have some precautions to avoid browser fingerprinting (btw my VPN provider already has a service about blocking it). ![]() Then let's come to the title: Can they see my MAC address? Because I think that it is the last way that they can identify me and my main question is that. So I have changed my IP and browser information and the website can not reach this information anymore to prove that I am the same person using two accounts. So even if they collect my info from browser, they will see two browsers using different languages. I even changed one of browsers language to only English. Is there any other way for them to see that I am the same person? I use different IPs, different browsers and I use both browsers in incognito mode. But can they collect an enough information to prove that these two identities belong to same person? ![]() I do not know that if the website uses cookies or not. I always use one for normal IP, one for the VPN IP. I use two browsers to hide behind browser fingerprinting. I am using a VPN and I use two IPs: first one is normal one, the second one is the VPN's IP. My question is that can a website see my MAC address or can they have an information about that I'm the same person under these conditions: I have searched other results and read many of them but I could not get an enough information.
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