Your digital footprint is basically the trail of breadcrumbs you leave behind...

https://hectorssuperjournals.wordpress.com/2026/04/14/why-do-i-keep-seeing-the-same-ad-a-peek-behind-the-ad-tech-curtain/

Your digital footprint is basically the trail of breadcrumbs you leave behind whenever you browse online. Companies collect this data to build a profile on your habits, often for advertising