Pacemakers
https://www.businessinsider.com/8-things-in-your-home-that-could-actually-be-spying-on-you-2018-3?r=US&IR=T 

RFID Technology
https://en.wikipedia.org/wiki/Contactless_smart_card 
https://www.bbc.co.uk/news/business-48859331

Medical Data
https://www.verywellhealth.com/who-has-access-to-your-medical-records-2615502 

Pen Movement
https://patents.google.com/patent/US6903730B2/en
https://www.cnet.com/how-to/take-better-notes-with-the-echo-smartpen/ 

Census Data
https://en.wikipedia.org/wiki/Mass_surveillance 

Satellites
https://science.howstuffworks.com/question529.htm 

Financial Transactions
https://www.aclu.org/other/swift-secret-government-spying-international-financial-transactions 
https://en.wikipedia.org/wiki/List_of_government_mass_surveillance_projects 

IMSI Catchers
https://en.wikipedia.org/wiki/IMSI-catcher 

Toll Booths
https://www.insidesources.com/your-ez-pass-and-the-state-dot-is-probably-watching-you/ 

Spies
https://en.wikipedia.org/wiki/Espionage