Computer Security World

Despite what movies and TV will have you think, there is no such thing as a voiceprint. As per this article on Discovery:

"It's a very very dangerous term. There is no single feature of a voice that is indelible that works like a fingerprint does."

Despite what some companies will have you believe about voice authentication, it has been shown not to work very well in practice.
Also, in case you haven't seen it before, this mythbusters video shows how fingerprint locks can be easily fooled too. Not to mention that if you use it for something valuable, you can lose your finger too.
Do you use fingerprint authentication on your laptop? Guess what... you are leaving your fingerprints all over the laptop, making it very easy for a smart thief to reconstruct a fake fingerprint as shown in the Mythbuster's video and get access to all you data and more.
Biometrics still have a way to go before I start using them.