So How Bad Is It?

While there’s little transparency around the companies that run fingerprinting scripts, the practice is verifiably widespread across the web. Many of the websites you visit will fingerprint your device; research from 2020 found a quarter of the world’s top 10,000 websites running fingerprinting scripts.

New ways of fingerprinting are being created too. For instance, earlier this year researchers proved they could create fingerprints of GPUs to identify people. Tracking people across different browsers is also possible.