Topic: Brain wallet password based on fingerprint? (Read 2583 times)

Like let's say you get a fingerprint based password for your brain wallet seed pass phrase. And you someday have an accident, like you burn your hand while cooking or some shit.

Brain wallets are good because they are unpredictable, you don't know what the person that made the password was thinking

Brain wallets can be easily bruteforced.

Humans are really bad at being truly random.

Some people are developing fingerprint wallets for online bank accounts and offline shopping.

Good for paranoids, i can't understand why people is always scared about hackers in 2016, when almost everywhere you can avoid them or just block you wallet?

I just had an idea. What if there is a tool which algorithms create a brain wallet password from the fingerprint (or from multiple fingerprints of the hand)? Every fingerprint is unique. Therefore every password created by the algos will be unique, too.
Thus, one would never run into the risk of losing his or her password anymore. Perhaps there is something already. However, I do not know it.

i'm not sure on this one, but i have read that there are people with the same fingerprint. this is rare but still not cool.

I never said this is the only factor that gives security. A large address space is necessary, but not sufficient, for bitcoin security.

i'm not sure on this one, but i have read that there are people with the same fingerprint. this is rare but still not cool. but as i mentioned i'm not sure and i might only be the software that thinks they are the same. this was some years ago so it might have changed.

I just had an idea. What if there is a tool which algorithms create a brain wallet password from the fingerprint (or from multiple fingerprints of the hand)? Every fingerprint is unique. Therefore every password created by the algos will be unique, too.
Thus, one would never run into the risk of losing his or her password anymore. Perhaps there is something already. However, I do not know it.

if people are adament they want fingerprint technology to be used, atleast make it workable
afterall, people have 10 fingers

i would suggest a method that has 10 keys(one per finger). but only needs lets say 3 keys to move funds.(3 of 10 multisig)
that way any of your 3 fingers would be accepted.

but just a 1 finger one key is not a good way to secure funds especially due to chemical burns, papercuts, age and other things that can affect a fingerprint

Even if the wallet password is based on the fingerprint there should be always an alternative to unlock it like the phones.
Sometimes you can't put your fingerprint and you enter a password and unlock it(like the laptop,phone etc), which is still not 100% secure.

I just had an idea. What if there is a tool which algorithms create a brain wallet password from the fingerprint (or from multiple fingerprints of the hand)? Every fingerprint is unique. Therefore every password created by the algos will be unique, too.
Thus, one would never run into the risk of losing his or her password anymore. Perhaps there is something already. However, I do not know it.

firstly
smart phones get handled.
so if you steal a smart phone then with a bit of dustpowder and some tape you can literally get the fingerprint from the screen of the same device you want to raid.

secondly
finger prints are not exact.
there are hundreds of 'indicators' on a finger, but get a papercut a few of them change/disapear, get old or fat and it changes. get calluses from hard labour work, a few of them change/disapear. use chemicals as a janitor on your hands in an accident, a few of them change/disapear
this is why the threshold for 'comparison' in criminal evidence is so low at a 6-12 indicator points because getting ALL indicators will never be possible.
meaning you cannot rely on hand picking just 6-12 indicators last year, hoping they will still be there in a few years. criminal finger print comparison looks at MANY indicators (above threshold) from an old sample and hope to find just 6-12 indicators on a newer sample

thirdly
retina scans are not perfect either.. diabetes, catacts, blindness, and other conditions can 'blur' the image obtained from a retina scan..

fourthly
identifyers in your head (password) is much safer than identifyers on your finger. imagine it this way. having fingerprint ID is like shouting out your email password every time you touch a light switch, cutlery, a bottle, even the tv remote.

in short trying to solve a security issue by making is stupidly easy for others to get hold of with some tools, or worse case eventually lose you access to due to nature purely based on laziness of someone clicking a few buttons and thinking about safe storage(using their brain).. is ultimately not a solution to security

it made the title laughable.. brain wallet without the brain....
you may like my next pun..

ill give this idea my middle finger

Correct, it's the S5 that still had in on screen.

This is something I'm really curious about... What about retina/iris, would it increase the set of possible keys?

The security of bitcoin comes from its enormous address space, when you reduce this space you reduce the security. This is why human generated brainwallets are stupid and are often sweeped in seconds.

If smart glasses like Google glass will be mainstream in some years, everyone will be able to easily get an iris scan. However a scan of three or more fingers of yours is rather impossible. Just my opinion.

Generally, I think a iris scanner would be a better option.