this post was submitted on 11 Feb 2024
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No Stupid Questions

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Like, anyway we could permanently change the patern on a finger?

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[–] SpacePirate@lemmy.ml 30 points 10 months ago (2 children)

Could you? Yes. But there really is no point— biometrics alone are only a single factor for authentication.

You should have at least two of the three— something you are (fingerprint, facial, or retinal recognition), something you have (badge, token, secure device), and something you know (passphrase).

[–] scottmeme@sh.itjust.works 18 points 10 months ago (2 children)

Everyone always seems to forget rectal recognition SMH

[–] RyruGrr@lemmy.world 6 points 10 months ago (2 children)

Some places use penile codes, as well.

[–] MajorMajormajormajor@lemmy.ca 6 points 10 months ago

It really sucks when you're told your code is too short to use.

[–] pearsaltchocolatebar@discuss.online 3 points 10 months ago (1 children)

You can actually use your penis to unlock your phone,

[–] echodot@feddit.uk -2 points 10 months ago (1 children)

But, you shouldn't.

I learned that on a course.

[–] Fudoshin@feddit.uk 0 points 10 months ago

learned

American LARPing as a Brit.

[–] nodsocket@lemmy.world 1 points 10 months ago
[–] Kbobabob@lemmy.world 4 points 10 months ago (1 children)

biometrics alone are only a single factor for authentication.

I'd argue that biometrics is NOT an authentication factor but is instead a username. You're identifying who you are.

[–] SpacePirate@lemmy.ml 3 points 10 months ago

Authentication is, explicitly, the process of validating that you are who you say you are. Like biometrics, your username is part of your digital identity. So you are correct in arguing that biometrics alone is little stronger than a username, but by definition, both are part of authentication.

That said, to securely authenticate your identity, you need to use multiple factors.

[–] WheelcharArtist@lemmy.world 22 points 10 months ago (1 children)

No there is no way. And vecause of that it is a stupid idea to use fingerprints instead of passwords

[–] Kyoyeou 3 points 10 months ago (2 children)

So, like I couldn't even technically create a Scar on the finger by continuously creating damage at the same place to destroy some details and create new ones?

[–] vexikron@lemmy.zip 24 points 10 months ago (2 children)

You could.

Good luck with resetting your account credentials though.

Also: Please for the love of god do not apply this logic to cornea scans.

[–] TonyTonyChopper@mander.xyz 2 points 10 months ago* (last edited 10 months ago) (1 children)

Eye biometrics scan the iris or the retina, not the cornea (which is transparent)

[–] vexikron@lemmy.zip 1 points 10 months ago

Youre right, I got my eyeball parts confused.

[–] Kyoyeou 2 points 10 months ago (1 children)
[–] partial_accumen@lemmy.world 1 points 10 months ago

You don't even need to damage your fingers more than once. You just need to get the damage deep enough. Burning with thermal energy or chemicals would do it. You would NOT enjoy the process or the result.

[–] WheelcharArtist@lemmy.world 3 points 10 months ago

that wouldn't create a new one just alter the old one. you would have to destroy / scar / whatever your fingerprints to a point where they can't be distinguished from others

[–] hperrin@lemmy.world 17 points 10 months ago (1 children)

You can’t change it, but you can remove it with fire.

[–] 0ops@lemm.ee 2 points 10 months ago

I've totally had to wait for wounds to heal to recalibrate my thumbprint

[–] tubbadu@lemmy.kde.social 14 points 10 months ago (1 children)

Oh shit, new fear unlocked

[–] Kyoyeou 1 points 10 months ago (1 children)

Well, like, when you save your Fingerprint in your phone it stays in a safe place in the phone, but it could get stollen if a person made a shitty product, and like, I don't know you but I only got 10 of those

[–] RedditWanderer@lemmy.world 9 points 10 months ago (1 children)

Normally phones provide an API to use your fingerprint, but the fingerprint itself isn't shared or stored. Just like passwords there are ways of sharing this without sharing the plain data or storing it.

It would be much easier to lift your fingerprint IRL and use it than through a website like that. At least without skipping through a lot of warnings.

To avoid always having to login, there's a token cached on the browser side which lately has been the target of attacks. A temporary ticket store on your computer that people copy to use for a while and access sensistive info as if they had you crendentials. With this type of attack it doesn't matter what the password type is.

TLDR fingerprints are as safe as any other password, which isn't very safe.

[–] Kyoyeou 1 points 10 months ago

Interesting read! Thank you

[–] Swerker@feddit.nu 7 points 10 months ago

I have a scar across one of my fingers so that part of my fingerprint has changed

[–] Atemu@lemmy.ml 6 points 10 months ago (1 children)
[–] guyrocket@kbin.social 4 points 10 months ago (2 children)

That was interesting and confirms what I remembered: you cannot alter your fingerprints. You can remove them, however.

Also interesting is that fingerprinting is not as certain as most think. A match is never 100%.

[–] dbx12@programming.dev 5 points 10 months ago (1 children)

a match is never 100%

But but but, the CSI series catches murders with 100% matches! (Ok, they also hack in VBA)

[–] vivavideri@lemmy.world 1 points 10 months ago

I mean, you can do an awful lot in vba lol

[–] snooggums@kbin.social 1 points 10 months ago

Not to mention that not everyone has fingers.

[–] VulKendov@reddthat.com 4 points 10 months ago

This isn't helpful but my phone and laptop stopped being able to read my fingerprints following a stem cell transplant.

Not sure exactly what caused it (chemo, radiation, the transplant itself) but I did have to redo my fingerprints to unlock my phone and laptop.

[–] droning_in_my_ears@lemmy.world 2 points 10 months ago (2 children)
[–] Nemo@midwest.social 7 points 10 months ago

Yeah, like if we get crumbs on our fingertips.

[–] corsicanguppy@lemmy.ca 1 points 10 months ago (1 children)
[–] neptune@dmv.social 3 points 10 months ago

I'd love a nice freshly baked fingerprint stollen. In Dec at least.