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GitLab is used only for code review, issue tracking and project management. Canonical locations for source code are still https://gitweb.torproject.org/ https://git.torproject.org/ and git-rw.torproject.org.

Closed (moved)
Opened by Georg Koppen@gk

Investigate possible DPI spoofing bypass

OxPoly on twitter claims being able to get the actual DPI of a device while the user is running Tor Browser. The PoC is:

var devicePixelRatio = window.devicePixelRatio || 1;
dpi_x = document.getElementById('testdiv').offsetWidth * devicePixelRatio;
dpi_y = document.getElementById('testdiv').offsetHeight * devicePixelRatio;

alert(dpi_x);

We should verify and if it is indeed an issue fix that.

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