I've used voice authentication with Nuance's SDK before and having a cold or gaining weight does not affect the verification process. It is based on acoustioc signatures in your voice and not necessarily a precise recreation of the original recording. This isn't a problem with this approach.

Also predicted in the movie 'The Fly' where Goldblum's character fails the voice recognition during his transformation.

All future technology has, apparently, been predicted by 1980/90s sci fi.

This could also be said about passwords: I have bad memory I can't remember a long complex password.. Point being that there are issues with all forms of security. Bullet proof glass for example can be taken out by an RPG this reasoning is only detrimental to the advancement, innovation, and implementation of layers of security to protect consumers. I think it's neat and my take a way from the article is that the author felt comforted by the fact that at least someone at the bank appreciated the movie sneakers and was attempting to increase security measures through innovation.