• OhmsLawn@lemmy.world
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    4 months ago

    I used to work on diesel engines. I’d end up with different looking fingerprints all the time from grease, oil random little cuts, etc. I’d hope this tech is better able to discern fingerprints from noise. It was a little annoying.

    • Avid Amoeba@lemmy.ca
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      4 months ago

      It might not be. If your fingerprints are physically changing, then an accurate scanner should not recognize a fingerprint that’s changed after the fact. If anything you’re looking for a less accurate scanner to help with this issue. But a less accurate scanner could let others in your phone too.

      A family member is a massage therapist and no fingerprint reader has managed to recognize their fingers. Not even the old capacitive types in the rear. They don’t even recognize there’s a fingerprint present. It’s like tapping with a wiener.

      • BigPotato@lemmy.world
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        4 months ago

        1.) Used to be a dishwasher and even the government had a hard time getting my prints.

        2.) A wiener (that’s attached to a human) can actually be used and make a recognizable print on a fingerprint reader. (Not recommended for daycare workers.)

    • skuzz@discuss.tchncs.de
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      4 months ago

      The tech has been in Samsung phones for several years, and is good enough that one’s fingerprint will read through vinyl gloves if they aren’t too scrunched up. It’s fast and decent.

      Does make me wonder though, it’s a Qualcomm tech. Does that mean Google is finally going back to Qualcomm chips? The pixel modems have been trash ever since they left.

      • ℛ𝒶𝓋ℯ𝓃@pawb.social
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        4 months ago

        Yeah, I instinctively tried to open mine with vinyl gloves on once and immediately thought “I’m dumb, gotta take these gloves off first.” That was a good shock when it actually worked first try, much confusion…

        • skuzz@discuss.tchncs.de
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          4 months ago

          It makes sense if you think about it, ultrasonic vibrations will “see through” the glove and detect the finger ridges beyond. If the glove is scrunched up, it “looks” like finger ridges that aren’t yours, which will then not match.

    • Twitches@lemm.ee
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      4 months ago

      I’ve done so much work with my hands. I thought something was wrong with my phone, my partner walked up finger on phone, opens immediately. Me, half the time I need to use the code because the fingerprint doesn’t work.

      • OhmsLawn@lemmy.world
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        4 months ago

        Exactly. I used to register my off hand, as that was a little less likely to get damaged.

        • Twitches@lemm.ee
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          4 months ago

          The problem is I’m prone to accidents so my non dominant and has scars from cutting myself.

    • downpunxx@fedia.io
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      4 months ago

      the more a fingerprint reader “allows” for oil, cuts, and any other change to the fingerprint it has stored, the more it becomes useless. the fingerprint is the key, the more the tech lets the lock change and morph the more insecure the lock becomes, and the more it will allow just about any key to work in it.

      • OhmsLawn@lemmy.world
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        4 months ago

        That’s exactly why I’d hope an ultrasound would ignore things like color difference. I wouldn’t expect it to ignore cuts without an ai component.

    • Nathan@ten1919.com
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      4 months ago

      My fellow diesel tech. Fucking yes this fucking problem right here hahaha. Skin peels a bit, little scratch or cut, got some shit on my hand to dry it out… And whole new finger print. Add this print, and once it hears it stops working again. Hahahaha fuck my life.

      My galaxy s24 has been pretty spot on though, honestly works most of the time unless my hands are very dirty.

    • Hubi@feddit.org
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      4 months ago

      Me too, the random little cuts are by far the worst because it can take weeks until the phone registers your fingerprint again.

      • OhmsLawn@lemmy.world
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        4 months ago

        Thank God it allows for more than one finger. I used to start running low on undamaged prints!

    • Madis@lemm.ee
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      4 months ago

      What if you used a part of your palm instead of a finger?

      • OhmsLawn@lemmy.world
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        4 months ago

        I solved the problem by getting a better job, but at the time, it wouldn’t have helped. Same problem. Swimming in motor oil.