Canvas fingerprinting, which can command your browser to draw a unique identifier and then log your online behaviour, is nearly impossible to detect, does not fall under “do not track” voluntary systems and evades most conventional ad-blocking software. It is already tracking users on 5 per cent of the biggest sites on the Internet, including The White House, Starbucks, Re/Max Canada, Canadian retailers Metro and Home Hardware, Postmedia website Canada.com, as well as a number of pornography sites.
Whew .... I was worried for a minute, but now that I know it's only for a test, I feel so much better. I guess what the CEO was really saying is, "Since we got caught spying on internet users, we'll pretend that it was all an innocent mistake. And the companies who are using our program are just part of the test".AddThis chief executive officer Rich Harris told news site ProPublica that the data were being used for “internal research and development.” He also claimed that it had not been “uniquely identifying enough” and the test would end soon.