Here are a few ways consumers leave their digital footprints:

Websites and online shopping channels: have set up cookie systems that store all the data that consumers have made on the online system, track every consumer's every move and let them allow Targeted Advertising to reach them.
Social networks: social network users have a habit of sharing personal information on social networks to interact with their friends and relatives and their interaction activities (like, comment, share , post photos,...) are recorded. At the same time, social networking sites also regularly update and introduce policies and settings to enhance user data tracking when consumers often click "Agree" without caring about the content. content of the policy.
Mobile phones, tablets, laptops: websites often allow consumers to access using multiple devices. While this is often seen as a way to secure their account information, it is also a way to collect data on consumer habits.