YSK that if you want to enter your PIN discreetly...

a day ago by insanemantis to c/youshouldknow

Use two fingers to put in your PIN

One actually presses, the other one doesn't

You could generate an absurd amount of possible PINs that could work on your card, giving any PIN peepers a seriously hard time, should they somehow have the intent to get ahold of your card and PIN through spying and pickpocketing

Safes, doors, etc. same principle

Even better tip: commit your false finger movements to muscle memory so not even a recurring stalker can bypass it

This will be totally overboard, and totally unnecessary, most of the time. But like any kind of security, it's good to have it even if you hopefully never need it

Zier 44 points a day ago

I usually speak very loudly while entering my PIN, "1 2 3 4"

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Chozo 18 points a day ago

I've got the same combination on my luggage!

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corsicanguppy 4 points 20 hours ago

My workmate used to do this 30 years ago.

I started copying him - same funny fake password - when I moved on. Then I left that job after 8 years. I came back to that crew 10 years after that, to where most of them had moved en masse after a calamity, and my casual workmate from back then was doing it a decade later -- same funny fake password. I laughed so hard.

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betterdeadthanreddit 26 points a day ago

The ol' two-finger entry method. It's been around longer than PINs.

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JasonDJ 28 points a day ago

I prefer calling it "two in the PIN".

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ILikeTraaaains 7 points a day ago

Two in the PIN, one in the PUK

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JasonDJ 1 point a day ago

I try to avoid the PUK...but I generally use my CAC for PIV.

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Valmond 1 point 2 hours ago

Thank you that made me laugh out loud 😁!

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theherk 5 points a day ago

Two fingers one pin

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socsa 6 points a day ago

Two fingers are ok, but I like to throw in a pinkie just to spice things up.

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MajorMajormajormajor 3 points 20 hours ago

How shocking.

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AbouBenAdhem 20 points a day ago

My method is to put four fingers over the four digits, and keep them in place while moving all of them for each press.

Assuming a four-digit code, your method generates 2^4^=16 possibilities; mine generates 4^4^=256.

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insanemantis 5 points a day ago

Solid idea, I might try that actually

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hiddenuser420 14 points a day ago

you can hold your other hand over while typing. I know the numbers and dont have to look, thats how I do it.

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tburkhol 10 points a day ago

Thermal camera will reveal the buttons your fingers lingered on and in roughly what order as they cool.

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betterdeadthanreddit 69 points a day ago

That's why I spend a few minutes afterward licking the keypad to lay false heat signatures and promote faster cooling due to saliva. Attackers/observers are temporarily stunned with confusion and disgust, giving me a brief window to escape unnoticed.

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whosepoopisonmybuttocks 6 points a day ago

Making sure that machine is warmed up for whatever deposit or withdrawal you had in mind?

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klankin 4 points a day ago

Also dissolves some of the oils your hand left behind, which any 2 bit criminal with a forensics lab would pick up on in a second

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Aqivex 5 points a day ago

Easily defended against: Upon finishing your transaction, simply press every single button on the machine in quick succession, with roughly equal firmness.

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socsa 2 points a day ago

One of the keypad locks I have on my door requires you press two random numbers after your pin, which I always thought was pretty clever. The one my parents have rotates the numbers, which also works but is reallllly not compatible with being drunk.

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mmmm 3 points a day ago

What if I use something else to press the buttons with one hand and covering with the other hand?

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tocopherol 1 point a day ago

Did you learn that from the game Splinter Cell? I remember using that trick, I feel like the odds of it working reliably IRL are extremely low though and also requires a thermal camera.

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tburkhol 1 point 21 hours ago

Somebody, maybe a youtuber, demo'd it on a checkout, maybe at a Target. I can definitely see fingerprints with my thermal camera, even after brief touches, and there's phones now with built-in thermal cams. You do need a pretty cool and uniform temperature keypad, so not one with electronics close behind it, and you have to image the keypad pretty close due to low resolution and pretty soon after the victim leaves - waiting for a receipt would normalize the temps. So, yeah, not a very practical attack.

But I feel like this whole thread is topic is pretty high on the improbable and unrealistic scale.

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krakloskewm 10 points a day ago

Something that is potentially helpful for stuff like this:

Every nuneric keypad ive eever seen is laid out in the same way and therr is usually a little bump over 5 which is the middle number.

If you can orient yourself by touch with the bump then the numbers will always be in thr same place and you can use this trick and cover the pad with your hand to be extra discrete.

Its really not hard. Like. Blind people can function in the world.

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prole 3 points a day ago

I learned to use the numpad by touch in high school typing class.

Still probably the most useful class I took in high school

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naticus 1 point 5 hours ago

We had very different experiences in typing classes. My teacher would regularly show up drunk (it was my first class of the day, so he was likely drinking until early morning hours), and eventually we just got all our instruction from his student teacher.

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ExLisper 1 point 3 hours ago

Most card readers I've used in recent years have touch screens.

This is pretty much the norm now.

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prole 7 points a day ago

Sometimes I'll do like jazz hand fingers on the keypad so it looks like I'm just jamming a bunch of random numbers.

Or I'll mimic something like this but without actually pressing the buttons

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burido 6 points a day ago

my pin is 12 digits, I could say it out loud and no one would still be able to get in

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victorz 9 points a day ago

Is it 1111 1111 1111?

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bhamlin 10 points a day ago

Shit Not any more!

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Randelung 5 points a day ago

1 1 1 1 1 1 1 1 1 1 1 2, then?

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bhamlin 5 points 21 hours ago

ChatGPT suggest a secure 12 digit password for me, please.

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Randelung 3 points a day ago

My bank limits me to 4 digits, saying it "technically fulfills" the card supplier's security standards. I guess fake keypads are a bigger risk than people standing behind you, but still. Then again, 6 digits, which is the maximum, wouldn't change much, either.

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a_non_monotonic_function 6 points 20 hours ago

I use my penis as a stylus for optimal security--no way the casual viewer can actually see it in person.

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InGodWeThrust 3 points 19 hours ago

Not a casual, no, but us trained competitive penis enjoyers can catch every stroke with ease

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welfare_wizard 4 points a day ago

You can do the same on a keyboard. Use your left hand to lightly tap the 1234 keys while actually typing out the characters with your right. Saved me when I had to sit next to some nosy kid once.

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melsaskca 2 points a day ago

That is simple, but very good, advice.

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victorz 1 point a day ago

Do people not use fingerprint? Doesn't just make it harder, but eliminates the peeping aspect altogether.

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gingernate 8 points a day ago

How do you use a fingerprint to enter a pin?

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victorz 3 points a day ago

You don't?

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gingernate 2 points 13 hours ago

This post is about a pin for your debit card not your cellphone

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victorz 1 point 8 hours ago

I have whooshed and I am sorry.

Thank you.

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Strider 1 point 4 hours ago

Actually, reading op again it's really unclear. I also thought of putting in a pin into mobile.

(Yes I noticed the word card in there)

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Randelung 7 points a day ago

If you're in the US or plan to go there, don't use biometrics for your phone. "Law enforcement" can't make you give up your pin, but they can take your biometrics.

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victorz 1 point a day ago

Oh, yeah, trust β€” I do not intend to travel to the US in my lifetime again. Last time was in 2011.

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prex 1 point a day ago

Fingerprint, then pin.

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victorz 1 point a day ago

I have both, sure, but if I scan my print, I don't have to put the pattern in.

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Ydna 1 point an hour ago

If somebody steals your card, wouldn't they run the transaction as credit? They wouldn't need your PIN.

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