Device fingerprinting by font-rendering differences

In 2012, we demonstrated that the OS can be fingerprinted by checking the presence of a greater variety of front (hey, we also have a paper on that). In addition, we showed this by using JavaScript only that was running from a website. This project seems to have more detailed results on this issue, as the authors went further than checking the presence of of a font: they checked how characters are rendered with a given font in different browser. This surely gives more details than 0/1, and according to their results they could use this information solely to make 34% of their submissions uniquely identifiable:

You can find the paper here.