What is a digital fingerprint?

A digital fingerprint is like your device's unique "ID card" on the internet.
When you go online, your computer or phone automatically shares certain details – things like your IP address, operating system, browser version, screen size, time zone, and more.

Put together, these details create a pattern that's unique to you, just like a fingerprint. Websites (including LinkedIn) use this pattern to recognize your device and check if it's the same one you usually use.

If that fingerprint suddenly changes (for example, different IP, different device, or a new browser setup) it can trigger security checks or even login alerts.