Comments on: Amazon PayPhrase offers alternative payment service login

By: Chip

Chip — Sat, 31 Oct 2009 18:03:00 +0000

That's an interesting application of "significance" — a human intelligence trait that's difficult to replicate with AI. It also means that you can't bust the phrase through brute force — but can't you simply try the image permutations?

By: Chip

Chip — Sat, 31 Oct 2009 18:03:00 +0000

That’s an interesting application of “significance” — a human intelligence trait that’s difficult to replicate with AI. It also means that you can’t bust the phrase through brute force — but can’t you simply try the image permutations?

By: Chip

Chip — Sat, 31 Oct 2009 17:57:00 +0000

That's an interesting point. With 4-100 letters in any combination, the permutations are astronomical. But how many of those combinations would be memorable?

By: Chip

Chip — Sat, 31 Oct 2009 17:57:00 +0000

That’s an interesting point. With 4-100 letters in any combination, the permutations are astronomical. But how many of those combinations would be memorable?

By: Hamlesh

Hamlesh — Sat, 31 Oct 2009 12:32:00 +0000

Check out what the guys at pinoptic.com are up to. They've won some major contracts based on their "authentication methodology".

Its very clever stuff.

You pick a phrase for your authentication, then each time you want to authenticate (pin, atm, etc) it shows you different images, that could mean your phrase and you put them in the right order.

So lets say "tea at noon with the vicar" is your phrase.

One time you might use this sequence of images;

teapot + a clock showing 12 o'clock + a church.

Next time;

a golf tee + two circles next to each other + a cross

And so on. The grid shows 9 or so images. Its really clever stuff, and theres uptake at high levels where security matters.

By: Hamlesh

Hamlesh — Sat, 31 Oct 2009 12:32:00 +0000

Check out what the guys at pinoptic.com are up to. They’ve won some major contracts based on their “authentication methodology”.

Its very clever stuff.

You pick a phrase for your authentication, then each time you want to authenticate (pin, atm, etc) it shows you different images, that could mean your phrase and you put them in the right order.

So lets say “tea at noon with the vicar” is your phrase.

One time you might use this sequence of images;

teapot + a clock showing 12 o’clock + a church.

Next time;

a golf tee + two circles next to each other + a cross

And so on. The grid shows 9 or so images. Its really clever stuff, and theres uptake at high levels where security matters.

By: Joseph A Nagy Jr

Joseph A Nagy Jr — Sat, 31 Oct 2009 01:05:00 +0000

With such restrictions on phrases, I'm sure they'll run out of non-gibberish phrases rather quick.

By: Joseph A Nagy Jr

Joseph A Nagy Jr — Sat, 31 Oct 2009 01:05:00 +0000

With such restrictions on phrases, I’m sure they’ll run out of non-gibberish phrases rather quick.