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Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

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Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#31
post #29

Earlier quoted context omitted.

I disagree. Fingerprints are privacy locks, not security locks. The lock in your bathroom isn't meant to secure the bathroom. It's just a way to ensure that people get the message, "please don't enter". A fingerprint on a phone is a way of saying the same thing. This phone isn't meant for common use, please don't enter.

That's a really nice distinction. It feels like there's a bit of a spectrum, though. The lock on a houses door won't prevent a determined criminal, but it sends a very strong signal and is inconvenient to break. Perhaps we should thing of there as being multiple dimensions to locks, such as security, signaling, effort to circumvent, and convenience? (Perhaps also conscientiousness in disabling, in relation to @saoseb…

Definitely a spectrum. Bike locks are for security, but mainly just to make your bike less convenient than another one nearby.

If someone wants into YOUR phone, they'll get it. If someone wants into A phone, a thumbprint may be plenty.

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#32

Earlier quoted context omitted.

I disagree. Fingerprints are privacy locks, not security locks. The lock in your bathroom isn't meant to secure the bathroom. It's just a way to ensure that people get the message, "please don't enter". A fingerprint on a phone is a way of saying the same thing. This phone isn't meant for common use, please don't enter.

I mostly cringe at the argument I quoted because it is often misapplied due to how we have historically misapplied passwords. A username is an identity. Historically due to the difficulty of verifying identities online, we have used passwords as a way to do so. And when all we need to do is verify an identity or control basic access levels (the bathroom lock!), a fingerprint is absolutely good enough. But a password…

Yes, absolutely. :)

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#33

I get relatively annoyed about the facile pedantry of this argument, but this is exactly the poster case for it, so here goes: fingerprints are usernames, not passwords.

Fingerprints are neither really suitable as usernames (because you can neither guarantee that users have them or that thhey don't change outside of your and the user's control or, really, even that they are unique, though they are conventionally assumed to be so) nor passwords (because they aren't secret, can't be changed if compromised, etc.)

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#34

i'm seeing two (obvious) bigger picture trends here that this story reinforces. 1. Digital authentication for purchasing is moving towards non-transferable biometrics ( i cant divulge my thumbprint like i can my pin ) 2. Goods of all kinds are being delivered faster The scary thing for me is that thieves love goods delivered quickly, so they can turn them quickly, and cut down on their ability to get intercepted. So…

Chopping off your thumb is only in movies, where logic barely exists. In real life, you can cancel your funds and reverse their fraudulent transactions.

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#35

Earlier quoted context omitted.

I disagree. Fingerprints are privacy locks, not security locks. The lock in your bathroom isn't meant to secure the bathroom. It's just a way to ensure that people get the message, "please don't enter". A fingerprint on a phone is a way of saying the same thing. This phone isn't meant for common use, please don't enter.

I mostly cringe at the argument I quoted because it is often misapplied due to how we have historically misapplied passwords. A username is an identity. Historically due to the difficulty of verifying identities online, we have used passwords as a way to do so. And when all we need to do is verify an identity or control basic access levels (the bathroom lock!), a fingerprint is absolutely good enough. But a password…

The "deliberateness" or "conciencousness" of a lock is an interesting dimension.

A laser cutter I used to work with had two switches, one of which was a safety switch (like [1]) to prevent accidental activation. The goal here isn't security. It's a design decision to prevent accidents. It's almost a kind of intentional inconvenience.

[1] Safety switch with cap prevent accidental switching: http://acuteelectrical.com.au/safety-switch/

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#36

i'm seeing two (obvious) bigger picture trends here that this story reinforces. 1. Digital authentication for purchasing is moving towards non-transferable biometrics ( i cant divulge my thumbprint like i can my pin ) 2. Goods of all kinds are being delivered faster The scary thing for me is that thieves love goods delivered quickly, so they can turn them quickly, and cut down on their ability to get intercepted. So…

There's a cool dystopian-ey youtube video briefly looking into that topic, among other things: https://www.youtube.com/watch?v=YJg02ivYzSs

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#37

i'm seeing two (obvious) bigger picture trends here that this story reinforces. 1. Digital authentication for purchasing is moving towards non-transferable biometrics ( i cant divulge my thumbprint like i can my pin ) 2. Goods of all kinds are being delivered faster The scary thing for me is that thieves love goods delivered quickly, so they can turn them quickly, and cut down on their ability to get intercepted. So…

The most fascinating part for me is that 6 year old managed to find a way to circumvent biometric security without hacking off someone's finger: authenticate while the user is asleep.

Necessity is truly the mother of innovation.

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#38

i'm seeing two (obvious) bigger picture trends here that this story reinforces. 1. Digital authentication for purchasing is moving towards non-transferable biometrics ( i cant divulge my thumbprint like i can my pin ) 2. Goods of all kinds are being delivered faster The scary thing for me is that thieves love goods delivered quickly, so they can turn them quickly, and cut down on their ability to get intercepted. So…

They'd need your whole hand, since any finger can be used for a smartphone biometric scanner.

Truthfully, lots of different scannable areas will unlock a phone. I've successfully and reliably configured my toes, the knuckles on my hands, and the tip of my nose. All of them work pretty good.

Unless observed using biometric security in a specific manner, an adversary might have a hard time deducing what kind of print will provide access.

Even if they've determined that the phone contains biometric scans tied to security, how would they know it's yours, and not someone else's, or even a specially printed 3D key ring fob or something?

Then again, criminals don't always think deeply about such details during a crime. They might just chop off both hands, grab the phone, and figure out the rest on the run.

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#39
post #35

Earlier quoted context omitted.

I mostly cringe at the argument I quoted because it is often misapplied due to how we have historically misapplied passwords. A username is an identity. Historically due to the difficulty of verifying identities online, we have used passwords as a way to do so. And when all we need to do is verify an identity or control basic access levels (the bathroom lock!), a fingerprint is absolutely good enough. But a password…

The "deliberateness" or "conciencousness" of a lock is an interesting dimension. A laser cutter I used to work with had two switches, one of which was a safety switch (like [1]) to prevent accidental activation. The goal here isn't security. It's a design decision to prevent accidents. It's almost a kind of intentional inconvenience. [1] Safety switch with cap prevent accidental switching: http://acuteelectrical.com.…

I bet legal experts could speak to this very well. At what point is someone breaking in?

Re: Child uses sleeping mom's thumbprint to buy $250 worth of Pokémon toys

#40

i'm seeing two (obvious) bigger picture trends here that this story reinforces. 1. Digital authentication for purchasing is moving towards non-transferable biometrics ( i cant divulge my thumbprint like i can my pin ) 2. Goods of all kinds are being delivered faster The scary thing for me is that thieves love goods delivered quickly, so they can turn them quickly, and cut down on their ability to get intercepted. So…

> Digital authentication for purchasing is moving towards non-transferable biometrics ( i cant divulge my thumbprint like i can my pin )

Yes you can. In fact, it's a lot easier for you to do so involuntarily.

EDIT: And, it should be noted, once it has been "divulged" or otherwise compromised, it's a lot more painful to change your thumbprint than a PIN or other non-biometric password.

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