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On 8/14/14 4:32 PM, William Denton wrote: > On 14 August 2014, Eric Hellman wrote: > > Another approach is Tor, both spreading the word about it and how to use > it properly, and also about running relays and exit nodes on the Tor > network. I run a relay myself, and encourage others to do so. > Institutions like libraries and universities should be running them---we > have the bandwidth and computing power and instituional heft---and I > wonder if anyone here is doing that are their work. Tor is a good thing, and I use it myself occasionally (more to add to the user pool and make personal identification harder than for anything else), but it won't completely stop canvas fingerprinting. I believe Tor blocks the WebGL API, which helps, but a certain amount of fingerprinting can be done using the W3C Canvas API, which is still allowed through. I've just posted a technical summary of canvas fingerprinting to my File Formats Blog: http://fileformats.wordpress.com/2014/08/15/canvasfp/ -- Gary McGath, Professional Software Developer http://www.garymcgath.com