DNA to replace passwords? Has no one seen Gattaca?
I was also going to say that replicating DNA is "easy" for those that know how. But even easier would be to say "bleed on this will you?"
Gattaca? I thought it was a dreary Corporate training film....
There's DNA in piss* isn't there? That's always an option
* there is in faeces, hey, if they want a sample, might as well have something I'll be dumping at some point during the day anyway. I prefer to get lightheaded and trippy in my own time.