Your digital footprint is basically the permanent trail of data you leave...

https://lukasnpyy234.cavandoragh.org/decoding-the-footer-what-is-blox-cms-and-why-does-your-news-site-use-it

Your digital footprint is basically the permanent trail of data you leave behind whenever you browse the web. Every site you visit and search you make builds a profile that advertisers use to follow you