Password Security - Do changes make it less secure?

[Vorian Atreides]

Originally Posted by Han Solo

That's amazing! I've got the same combination on my luggage!

This is like deja vu . . . but RN!

Originally Posted by campbell

. . . My dad told me about some interesting signature identification tech IBM was working on in the 1980s -- they brought in successful forgers to test it out to check for false positives, and management trainees [my dad was one] to check out false negatives. It worked pretty well, but doesn't seem to have been implemented anywhere.

I assume the data requirements were onerous for those things back in the 80's.

[limabeanactuary]

Originally Posted by Lucy

I assume the data requirements were onerous for those things back in the 80's.

Actually, no.

It wasn't the image that was being tested.

The signature got characterized with a few vectors, and they weren't terribly huge iirc. The R&D guys didn't give my dad the total story, but signature recognition was done via pressure gradients. It has nothing to do with what it looks like .... that's why none of the forgers were successful.

I do bet they used Hidden Markov Models... great stuff for that sort of thing.