Problems
- Difficult to secure.
- Difficult to scale.
- Difficult to distribute.
- Identities need private information to be useful, but privacy is
difficult to ensure.
- Hailstorm is supposed to address
this.
Privacy of information is focal point in Hailstorm web servicing.
In fact, users of Hailstorm web services are empowered to manage
the availability of their personal information through "affirmative
consent".
- No specialized repositories.
- Requires acceptance of an agent rather than a protocol.
- white
paper says it will evolve toward Kerberos and Windows implements (i
think) a non-standard, patent-encumbered Kerberos.
- not
free:
Passport intends to charge a nominal annual license fee to service
operators. However, Microsoft is currently waiving fees.
