“This sounds fairly basic, but it really isn’t. Since the data is sent with a unique identifier, a user’s Google advertising ID,
it would be easy to link this data into a profile and paint a fine-grained picture of someone’s interests, identities and daily routines.”
https://www.theverge.com/2019/3/5/18252397/facebook-android-apps-sending-data-user-privacy-developer-tools-violation
COMPARE THAT TO LIFELOG:
In 2003, a project called LifeLog was started at the Defense Advanced Research Projects Agency (DARPA) under Douglas Gage. Lifelogging was going to be achieved by combining several technologies to record the activities of life to create a life diary. Shortly after, the notion of lifelogging was identified as a technology and cultural practice that could be exploited by governments, businesses or militaries through surveillance. [12]. The DARPA lifelogging project was cancelled by 2004, but this project helped to popularize the idea and usage of the term lifelogging in everyday discourse. It contributed to the growing acceptance of using technology for augmented memory.[13]
FACEBOOK IS THE COLLECTOR OF DATA
All these other apps are designed to scrape data and transfer it to facebook, where they gather, build a profile, and store your information. Combine it with facebook trying to gain access to medical records and it becomes seriously spooky what someone could do with the data.