This was demoed to my employer when Microsoft came through a month ago. I was not impressed -- biometrics are a username, not a password. edit: the article does not cover using your voice. I'm 99% sure they demoed to us the ability to use a custom phrase to authenticate with your voice as well.
Can you clarify what you mean by that. People like to parrot it, but few if any will explain why they feel that way.
If you simply mean that you don't find it secure enough, wouldn't that really depend on the use-case? For example, what may not be secure enough to log into a DC, may be secure enough to let the secretary log into their computer which just has access to address books and calendars. It is all relative.
Some biometric systems are fairly secure, like fingerprints. The cost and skill required to extract and reproduce a fingerprint so it is scannable make it a non-trivial affair. While the security services and a dedicated adversary could, for 80%+ of normal computer users it is a non-threat.
Android's face unlock may have been trivially beaten but it reads like Microsoft are using multi-level photography (i.e. both IR for under-the-skin and visible light for on-the-skin) to extract a layered model of a person's face and head which could (maybe) prove harder to bypass with just a photograph.
