Add that there is a pletora of consumer PCs with similar configurations. Also, you would need a whole lot of samples to get statistically relevant results.ĮDIT: Browser fingerprint identifying power is weak: many browsers are autoupdating (like Chrome or Firefox) and official builts are very few (20? 40? Maybe a bit more if you count Linux distribution-compiled ones), so you will find a consistent portion of users with the same user agent. It's a good proof concept, but nothing that you can use for this purpose. No way, you cannot set a variable or cookie from one domain and access it from another one in any decent browser, otherwise it would be a big security hole.ĮDIT: Panopticlick cannot be used as a tracking method as you suggested, because it is based on statistical matching and it is also pretty bad at that (try browsing from outside the USA or with the just-released Chrome/Firefox update). Also notice that user tracking is a delicate subject and you might incur into legal problems if you do not properly declare it in the TOS.ĮDIT: you cannot track a person across multiple web sites without using cookies in any of their variants (flash, session storage, etc.) and a domain shared between sites. This website aims at studying the diversity of browser fingerprints and providing developers with data to help them design good defenses. Please bear in mind that the user can manipulate the HASHCODE and you should take that into account when engineering your application.Īnyway, notice that it's quite ugly in the fancy-url era. How do you detect it A product Fingerprint (or Unique Fingerprint) requires an imaging device and a computing device to acquire an image of each product. The recovery of partial fingerprints from a crime scene is an important method of forensic science. Whenever the server receives a request, it capture the HASHCODE if present, otherwise it generates one, and then append it to all links on the served page. A fingerprint is an impression left by the friction ridges of a human finger. The publication list related to fingerprinting is available here. In fact, the fingerprint of the laptop we wrote this piece on was completely unique among the 1.7 million fingerprints collected by Electronic Frontier Foundation’s Panopticlick tool. Simplest way to keep a session without using cookies is appending a unique hash (maybe a UUID or something similar) to the urls in the page as a get parameter: /my/fancy/url We have an AmIUnique extension for Firefox and Chrome to track the evolution of your fingerprint.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |