[Zope] How/Where to store user specific data?

How (Where) can I store user specific data? I am developing a product in python (Multible Choice Test) and want to store some data for every user (Results of the tests). I see two ways: Add data to the user object in acl_users or Store data in a hash with the user-id as key What do you think? -- Open Source Software Solutions Thomas Guettler <thomas@thomas-guettler.de> http://www.thomas-guettler.de