Divided into categories to make user agents easy to implement
- physical
- Contact information: phone, address etc
- online
- Contact information: email address
- uniqueid
- Unique identifiers: social security number
- financial
- Bank account number, Visa number
- computer
- IP number, domain name, browser type, operating system
- navigation
- Which pages visited, how long you stayed there
- pref
- Favourite colour, likes jazz
- demograph
- Gender, age, income
- content
- Emails, Chat conversations
