I'm worried about the new ID cards. Not the thought of carrying one per se, more the scope for it to go wrong in so many new and interesting ways. Read the first bold link for a succinct reason behind my problems with the technology, and the second for my fears about the concept.
Biometrics are cool, but...
Problems with authentication
BBC NEWS | Q&A: Identity cards
BBC iCan - ID cards: an iCan briefing
BBC NEWS | Other countries' ID schemes
BBC NEWS | When the British fought off ID cards
PrivacyActivism.org | Biometrics And Airport Security
EPIC Statement on Biometrics and Identity Theft, 7/18/02
No to ID cards- against ID cards, Identity cards and entitlement car...