I had a different post that didn't really answer your question. A real answer is that it might not be as much of a problem as you might imagine. Biometric verification is really insecure: something like a 1% false positive rate for fingerprints.
Ideally people would just use passwords like back in the olden days. Longer strings are more secure than random characters.
Edit: should clarify this was for fingerprints unlocking an iphone
Some years back I was in a D&D campaign where doppelgangers became a major ongoing concern. It turned out that in that case doppelgangers built up their image of the person they wanted to mimic through careful observation, but thanks to the general prudishness of society doppelgangers rarely ever caught glimpses of peoples' genitals. So we ultimately came up with the "crotch check" system. Doppelgangers usually couldn't form plausible genitalia.
You authenticate either with something that you have (physical key, for example), something that you know (passwor for example), or something that you are (biometrics, basically).
Dopplegangers rule out that last one, but the previous two still work fine
That also goes for what you are. Biometric security has been rendered nearly useless since everybody and their mother started using it without giving a single shit about securing that data
I don't see how looking like me would help them get CCTV footage, unless it's through some sort of supernatural means. And even if they could find footage of me entering a password, they'd be hard-pressed to extract individual keystrokes from a typical CCTV quality recording. Perhaps it's technically possible, but it's certainly not trivial.
Does my doppelganger have the same tastes as me? If not, then only the real me would walk around with Amy Rose and/or Sonamy (Sonic x Amy Rose) wallpapers on all his devices without the slightest hint of shame or embarrassment.
If he has the same taste, then we'll play SoulCalibur 3 together.
Ooh, that's a good one. If we don't share taste, then just hook me up to a lie detector and ask if I liked the dub of the last Eureka Seven movie. If we do share taste, then sweet! There's two fans of it!
Shit, that may be the most personally identifiable information I've ever shared
I would be signing all my communications cryptographically and sharing a key in person so people can validate whether a message not delivered face to face is really from me.
Think like identity theft, they transform their body to match your body, and their voice matches your voice. The only way they can get detected is if they get arrested and the authorities use a machine to verify someone's true identity.
Don't forget, this is the information age, they might have surveillance capabilities to monitor the way you talk, and be able to record your authentication methods.
Hmm. I'm not entirely clear here...are you saying the answer to both of the two questions is "no"? I mean, you didn't explicitly say that the doppleganger has the same knowledge or the same possessions, but you also didn't explicitly say that they didn't.
They don’t have a replica of your brain, if that’s what you are asking.
Okay. In that case, I think that I'd probably use that, since there will definitely be information that I could show other people that only I know. Passwords, past private memories with people I know, that sort of thing. Maybe if one is optimistic, my doppleganger could guess or somehow obtain one or two, but if we do a number of these, I should be able to pass many more of these than my doppleganger.
My friends would notice immediately when we started playing any fps games after work. I don't wanna toot my own horn too much, but I am decently above average at fps games and my friends tend to like having me on their team since I am almost always top fragging.
If they aren't weirdly good at shooters people are gonna get suspicious quick lol
If they only mimic me and have some knowledge based on what is on my phone/online, they probably don't speak the same foreign languages as I on the same level. So I could authenticate myself by proving that I speak those languages.
fingerprints are not genetic, but are formed by the movement of the fetus in the womb. while they are not a reliable way to identify someone out of a general population (the likeness is about 1:10000; there have been wrongful convictions based off of fingerprint data) they can be used to differentiate two individuals.
almost everyone has some insignificant scarring on the hands or face that's created after birth and which is tied to some stupid story about cutting cheese or whatever.
everyone has some weird fetish. if you don't think your fetish is weird, it's because you're in company that shares it.
I've had several occasions where I've seen doppelgangers out in public in my city but I'm 99% sure this is because I was a sperm donor baby. It was totally anonymous in the early 90s.
Could do one of those DNA test things but I have less than 0 interest in meeting a bunch of half siblings. Sounds messy. Already got two parents who I'm happy with.
So far, I've been compromised twice. The second, hijacking my phone via sim swap, means there's a doppleganger who is pretty good at being me. Luckily I was able to restore my phone to me in about 1/2 hr because I still had a landline phone at the time, and so got ahold of my provider quickly.
鴉PieFed
I had a different post that didn't really answer your question. A real answer is that it might not be as much of a problem as you might imagine. Biometric verification is really insecure: something like a 1% false positive rate for fingerprints.
Ideally people would just use passwords like back in the olden days. Longer strings are more secure than random characters.
Edit: should clarify this was for fingerprints unlocking an iphone
I'm the one with a slightly fucked up left arm
Assuming i'm caught by someone that know me well, just ask me about the slight red patch on my face and tell me it's allergic.
You mean like identical twins?
Relevant XKCD: https://xkcd.com/1121/
Does my doppelgänger go to my workplace and do my job?
If he doesn’t, there’s your answer.
If he does, I’ll leave him to it and go read a book in the park.
Congrats, your doppelganger goes to your job and gets you fired. The monkey's paw strikes again.
Then they can get another job or die. Enjoy it, fucker. I have books to read.
In that case, that's the giveaway
Don't let my boss know that I know this.
Some years back I was in a D&D campaign where doppelgangers became a major ongoing concern. It turned out that in that case doppelgangers built up their image of the person they wanted to mimic through careful observation, but thanks to the general prudishness of society doppelgangers rarely ever caught glimpses of peoples' genitals. So we ultimately came up with the "crotch check" system. Doppelgangers usually couldn't form plausible genitalia.
This is the most D&D campaign thing I've ever heard, no further questions
The bard
Simple. I kill my doppelgänger, if he wins he wanted it more.
There could be only one Rusty Shackleford.
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Nice try, Doppelganger!
Save it for queen dopplepopolis!
I haven’t thought of that quite since the late ‘00s. Thank you.
I dub thee Sir Phobos, Beater of Ass.
You wanna be me so bad? Here's the keys, good luck, fucker.
You authenticate either with something that you have (physical key, for example), something that you know (passwor for example), or something that you are (biometrics, basically).
Dopplegangers rule out that last one, but the previous two still work fine
"Something you have" is not exactly a good way to authenticate. Once they steal it, they can assume your identity (see: ID Theft)
That also goes for what you are. Biometric security has been rendered nearly useless since everybody and their mother started using it without giving a single shit about securing that data
Same as I do now, passwords. Unless they inherited my memories, in which case who's to say I'm not the doppelganger?
Lol, I think passwords are very trival to get.
I mean, they got the ability to look like you, you gotta assume they can get CCTV footage of you typing your passwords.
I don't see how looking like me would help them get CCTV footage, unless it's through some sort of supernatural means. And even if they could find footage of me entering a password, they'd be hard-pressed to extract individual keystrokes from a typical CCTV quality recording. Perhaps it's technically possible, but it's certainly not trivial.
Well, easy, I'm the one without the moustache.
I'm pretty sure you always had a moustache ...
Be too useless to merit a doppelganger. To paraphrase zhuangzi, few know the usefulness of uselessness.
Why must we be enemies? I want to be his friend.
I'm just thinking about the amount of pranks I can pull
I don't think I'd get along with me.
I'm already an identical twin and it's a nightmare even having a different first and middle name but same everything else.
I think we're just living with a second set of identical twins?
Does my doppelganger have the same tastes as me? If not, then only the real me would walk around with Amy Rose and/or Sonamy (Sonic x Amy Rose) wallpapers on all his devices without the slightest hint of shame or embarrassment.
If he has the same taste, then we'll play SoulCalibur 3 together.
Ooh, that's a good one. If we don't share taste, then just hook me up to a lie detector and ask if I liked the dub of the last Eureka Seven movie. If we do share taste, then sweet! There's two fans of it!
Shit, that may be the most personally identifiable information I've ever shared
I would be signing all my communications cryptographically and sharing a key in person so people can validate whether a message not delivered face to face is really from me.
Cryptography is the only correct answer
Does my doppelganger have the same knowledge I have, or just the same outward physical characteristics?
Does my doppelganger possess the same physical objects I do, like an identical copy of a cell phone, say?
Think like identity theft, they transform their body to match your body, and their voice matches your voice. The only way they can get detected is if they get arrested and the authorities use a machine to verify someone's true identity.
Don't forget, this is the information age, they might have surveillance capabilities to monitor the way you talk, and be able to record your authentication methods.
Hmm. I'm not entirely clear here...are you saying the answer to both of the two questions is "no"? I mean, you didn't explicitly say that the doppleganger has the same knowledge or the same possessions, but you also didn't explicitly say that they didn't.
They don't have a replica of your brain, if that's what you are asking.
They just look the exact same as you, along with your voice.
But they might have hacked your phone and started listening in to be able to mimic the way you talk.
No, but they could just steal your phone, or better yet, just kidnap you and lock you away then steal your clothes too.
Okay. In that case, I think that I'd probably use that, since there will definitely be information that I could show other people that only I know. Passwords, past private memories with people I know, that sort of thing. Maybe if one is optimistic, my doppleganger could guess or somehow obtain one or two, but if we do a number of these, I should be able to pass many more of these than my doppleganger.
how about i just fuck them then 🤗
That begs the age old question... would that be incest, or masturbation?
since its a completely different person that just tries to look like you, neither. A bit of narcissism maybe.
My doppelganger will provide PII before I do
Whichever one folds and tells you an actual identifying characteristic first is the fake
The inquisitor sighs in exasperation.
"It's been 36 hours. You've each had one granola bar and a bottle of Pepsi since you got here. At some point, one of you has to prove you're real."
Left Starman says "I invoke the 5th."
Right Starman says "I want a lawyer."
"You're not under arrest! We're just trying to figure out which one of you is real. You gotta give us something.
Both Starmen simultaneously state "I don't talk to police."
The interrogation continues for a further 17 hours before Left Starman gives in. "My cat's name is Iris, you can call my roommates and verify it."
"You dumb son of a bitch," Right Starman says, "that's just what I tell people online."
BLAM
I think BLAM means right starman gets a bullet in the head??
Left Starman, but yes
My cat's real name is Lily
That's why Right Starman gets it.
Left Starman didn't actually reveal PII. He tricked Right Starman into doing it.
I have a hardware key, that's probably secure enough. 128 bits of unique data.
I'm the one who knows how to use Lemmy.
I'd sign a payload using my private key that my doppelganger doesn't have.
My friends would notice immediately when we started playing any fps games after work. I don't wanna toot my own horn too much, but I am decently above average at fps games and my friends tend to like having me on their team since I am almost always top fragging.
If they aren't weirdly good at shooters people are gonna get suspicious quick lol
Highlander rules.
There can be only one CaptPretentious.
Secret handshake
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If they only mimic me and have some knowledge based on what is on my phone/online, they probably don't speak the same foreign languages as I on the same level. So I could authenticate myself by proving that I speak those languages.
I've had several occasions where I've seen doppelgangers out in public in my city but I'm 99% sure this is because I was a sperm donor baby. It was totally anonymous in the early 90s.
Could do one of those DNA test things but I have less than 0 interest in meeting a bunch of half siblings. Sounds messy. Already got two parents who I'm happy with.
I feel like one day, the offsprings of the sperm doner is gonna end up have kids with one another, and that's gonna be... well um... Alabamian 👀
Yeah kinda solved that issue by marrying someone from another country
"What's something only the real me would know?"
They can't type anything on my phone because I use Thumb-Key.
Assuming they haven't mugged me, I'd just sign into one of my accounts with my yubikey.
So far, I've been compromised twice. The second, hijacking my phone via sim swap, means there's a doppleganger who is pretty good at being me. Luckily I was able to restore my phone to me in about 1/2 hr because I still had a landline phone at the time, and so got ahold of my provider quickly.
I’ve never met anyone who looks like me so I don’t worry about it