Here is a list of activities, starting from night to day
- Over night a lot of mail and packages are moved, leaving tracking data in databases.
- There are also all kind of batch jobs running to produce statements, dig into details of transactions from the day before, and much more.
- Because several alarm clocks are running, devices being on standby, and of course fridge, freezer, heating system, etc. performing their duties, energy consumption could be (e-)metered, leaving entries at the utilities. During the day, all kinds of electrical devices (stove, computer, microwave, washer/dryer, lights, etc.) will add data.
- By making phone calls, connection records (and who knows what more?) is left. If I call a hotline, sometimes phone calls are recorded, often records added to CRM databases, etc.
- When doing (grocery) shopping, a list of my items is added to the transactions. Maybe automatically some items are re-ordered.
- Using electronic payment, a credit card/check card debit action is performed.
- For paying bills, an electronic fund transfer with associated records at several banks is done.
- When surfing, my traces are left in web logs, cookies are produced, "recommendations" are processed, Google and other ad networks/analytics/tracking companies are adding to my profile, my IP connections are stored, my DSL provider probably keeps additional information.
- When parking in a downtown garage, my license plate is recorded during entry/exit.
- The local library keeps a list (and maybe a history) of books on my and the kids' account.
- and much more