This is incredibly hard to do well and takes a great deal of discipline. Unless you're a Belgacom or Gemalto sysadmin, the consequences of cross-contamination

This is incredibly hard to do well and takes a great deal of discipline. Unless you're a Belgacom or Gemalto sysadmin, the consequences of cross-contamination aren't grave. It's easy enough to burn an identity and create a new one.