On Thu, Sep 7, 2017 at 11:28 AM, Enrico Weigelt, metux IT consult <
enrico.weig...@gr13.net> wrote:

> Optimally, the browser should tell nothing about the client - web
> content should written in a way that it works independent from the
> actual client. At least that's how the web originally was designed.
>

​Without some kind of signal everyone gets the least-common-denominator
version of a site (and even then older equipment or phones may result in a
poor experience) or sites will try to guess based on user-agent. Privacy
minded folks can spoof their user agent, sure, but nothing says we can't
create ways to spoof the client-hint responses (allow them to be turned
off).

For images and things maybe CSS could specify some media queries that loads
different resources based on local factors like amount of memory or network
speed, but then that's leaking the same information just in a different way.

-Dan Veditz
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