The bigger problem I see here is browser security and Javascript as a whole. Browsers should not be allowed to extract and send such vast amounts of information in the first place, especially without the user's consent. At most, they should return a few broad things such as browser type (major version), language perhaps, and device type (mobile/desktop). That's it. Other things, such as exact resolutions, time zones, and other hardware identifiers make it trivially easy to track users across the Internet. Now that it's too late to revise Web standards, browsers should default to return spoofed values for all the rest.