• GutterRat42@lemmy.world
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      8 minutes ago

      Contactless payment works without connection. Now, the technical marvel is that it works even if the phone is dead.

  • mEEGal@lemmy.world
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    6 hours ago

    Nice meme, but for us out there with at least a fully virtual card (some companies provide such benefits), we need a real MyAss-Pay alternative

    I recently found Walt, but it’s a work in progress for now. The app is avalaible though

  • ExtremeDullard@piefed.social
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    10 hours ago

    I’ll do one better:

    Reshaped payment card's NFC antenna

    My payment card was just a bit too wide to fit in my cellphone’s cover. The phone’s own NFC antenna is at the top - and I use it all the time - so the card had to be at the bottom of the cover to avoid triggering the phone all the time, in portrait orientation so-to-speak.

    So I dissolved the card in acetone to extract the NFC chip and its antenna, then carefully reshaped one end of the antenna so it’s a bit less wide (and since I couldn’t modify the length of the wire or the number of turns in any way to avoid de-tuning the antenna too much, I sort of accordioned one side of the rectangle to accommodate the extra length of wire).

    Then I set the new shape of the antenna permanently by carefully applying a piece of packing tape over it, flipped it over, taped over the other side to seal everything, then carefully cut around the new, ultra-thin, stubbier contactless payment “card”.

    Now it fits really smartly in my cellphone cover!

    • definitemaybe@lemmy.ca
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      21 minutes ago

      Have you ever run into difficulty with needing to authenticate with chip+PIN? Like while traveling?

      That would be my big with with this; it would make it very difficult to pass a PIN check, to say the least!

      Super cool idea. I might just try it myself and see if I run into issues.

    • kamen@lemmy.world
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      3 hours ago

      Kudos for the effort. With that said, this would definitely raise some eyebrows if you have to return the card when getting a new one.

    • pankuleczkapl@lemmy.dbzer0.com
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      8 hours ago

      Amazing, I have never thought of that! I have always carried my card behind the phone, which is a bit too thick for my liking, but this is such a great idea, thanks for sharing!

    • JamesBoeing737MAX@sopuli.xyz
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      5 hours ago

      Well, what if you need an actual card for identification in the bank or something similar? Do you just show them the dissolved one?

      • Ricky Rigatoni@piefed.zip
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        4 hours ago

        Don’t know about OP but gov ID works for that purpose. I’m more worried about when they go to a store that doesn’t accept tap.

        • definitemaybe@lemmy.ca
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          24 minutes ago

          I was thinking about this, and there are two easy workarounds, I think:

          1. If possible, get a second active card in the same name. Ideally, a full-identical cloned card. Not sure if this would be allowed, but if not…
          2. Add another authorized user to your account and never give them the card, then just dissolve that card for tap payments.

          But, in either case, I do think you might run into a different issue: automated fraud detection sometimes requires me to chip+PIN, even for transcribed below the tap limit. This has happened to me when traveling. I don’t think there would be any way around that, and if you then fail to authenticate with chip+PIN, it’s reasonable to think that the bank would lock your card for contactless payments until you successfully authenticate the card again with chip+PIN. (To be clear: this is only speculation; not sure if that would be an issue in practice.)

          So, I suspect that whether this would work or not might depend on your institution (or maybe jurisdiction?)

      • Onomatopoeia@lemmy.cafe
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        4 hours ago

        The only time I’ve gone to my bank in the last 20 years was to get a new card, or to open a new account at a new bank.

    • OwOarchist@pawb.social
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      10 hours ago

      I dissolved the card in acetone to extract the NFC chip and its antenna,

      Wouldn’t the acetone also dissolve the insulation around the antenna wire? So when it touches itself, it shorts itself out, and – electrically speaking – you only have one turn of thicker wire?

      • Darkassassin07@lemmy.ca
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        10 hours ago

        Wire that thin is usually insulated with an enamel coating. I’d guess it’s either unaffected by acetone, or just tougher to breakdown. Allow the card to dissolve, but remove and dry asap, don’t let it linger longer than necessary.

        Veritasium demoed this a few weeks ago while discussing tap-to-pay security and a vulnerability with apple pay+visa.

      • Korhaka@sopuli.xyz
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        10 hours ago

        Only one way to find out, good thing that these don’t cost any money and you can just ask for a new one.

        Maybe take some cash out first to cover any payments you may need to make it it breaks in some way.

        • OwOarchist@pawb.social
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          10 hours ago

          If OP is using it and is happy with it, maybe one turn of wire is enough for it to still work, maybe with reduced range?

          • myotheraccount@lemmy.world
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            9 hours ago

            My guess is it wouldn’t work. On a magnetic antenna, the number of turns don’t affect range, but they do affect the frequency to which the antenna is tuned. It needs to be tuned roughly to the frequency the protocol operates on, otherwise it won’t work. In addition to that, these antennas also need to pick up power, which is also relative to the number of turns.

          • Korhaka@sopuli.xyz
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            10 hours ago

            Seems like something to experiment with at some point. I do have access to test contactless card readers but not sure how they would feel about me destroying the test cards.

      • mexicancartel@lemmy.dbzer0.com
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        9 hours ago

        Well if it dissolved any insulation, it will not work, as the coil isnt even coiling. It is not a one big coil buy just two ends shorted(or as in the picture, a very small coil. Since this works i can only conclude coating does not dissolve in acetone

  • ChaoticNeutralCzech@feddit.org
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    5 hours ago

    Some banks issue stickers for phones without NFC. It’s another physical card but contactless only and very thin (probably with an aluminum strip antenna).

  • stoy@lemmy.zip
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    10 hours ago

    Or you can just keep your card in your wallet, like you have done for decades

  • NoSpotOfGround@lemmy.world
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    10 hours ago

    Take that Android! This works even with the phone powered off! It works even without the phone at all!

    Wait…

  • diaphragmwp@discuss.tchncs.de
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    10 hours ago

    Ironic it’s a monobank card, it’s mobile only and you have to use a locked unrooted googled phone (or an iPhone) because big brother said so.

  • boredsquirrel (he)@slrpnk.net
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    8 hours ago

    Nobody here mention security?

    Like with passkeys (getting better though) and encrypted RCS messages, this is a proprietary standard that still sadly offers way more security.

    It is token based afaik and the secret is never shared or even readable by an attacker. This card can be stolen with a single swipe, all that is protecting you is the banking system being overly cautious and expecting their systems to fail, so you need to enter a pin code on higher transactions or your card is simply locked.

    Paying with VISA card online is insane from a security perspective, made slightly less bad by requiring authentication with a proprietary TAN app.

  • bryndos@fedia.io
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    9 hours ago

    I’ve got this papery stuff, and circley metal discs that works in most places. Unfortunately it does have pictures glorifying some family of depraved paedos on it , but not easy to avoid that.

    • boonhet@sopuli.xyz
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      7 hours ago

      Carrying an actual wallet all the time is pretty inconvenient, but honestly, I’ve been considering getting back into cash for 2 reasons: 1) If more people use cash, it’s harder to legislate it away altogether and 2) so small-time vendors don’t have to pay taxes. I don’t mean the local grocery store (the big chains get audited anyway), I mean the person with a stall selling homemade smoked sausages in front of a store, or the guy by the road who sells smoked fish from the nearby lake.

      Also euro banknotes don’t have people on it to avoid the whole paedo glorification thing, so that’s cool

      • yetAnotherUser@discuss.tchncs.de
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        3 hours ago

        Yup.

        And while the monarchist EU countries do stamp their monarchs on their coins, there’s more than enough decent and interestin people on other country’s variants.

        Like Austria stamping Mozart and Bertha von Suttner (first female recipient of the Nobel Peace Price).

        Or Croatia putting up Nikola Tesla, a Serb from Croatia, on some of their coins, likely to provoke Serbia. Or perhaps to symbolize unity between Croatians and Serbians but I frankly doubt that.

        Or France recently creating coins with three important French women on the 10, 20 and 50 cent coins: Simone Veil, Josephine Baker, and Marie Curie.

        Greece put up a couple people who were instrumental in Greek’s fight for independence and, more notably to Europe as a whole, the mythical Princess Europa riding on Zeus - the literal symbol of pan-Europeanism is on Greek’s 2€ coin.

        And that’s just a sample, there’s even more. Largely (ignoring the monarchies) people who genuinely deserve to be looked up to - or at least respected - are on the coins that have a person on them.

    • iknewitwhenisawit@fedinsfw.app
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      9 hours ago

      If you live in a country with 19th century banking where people still pay each other by IOU on little pieces of paper, then sure. In modern countries a lot of places only take electronic payments.

      • FishFace@piefed.social
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        8 hours ago

        In my country there are both places that only accept electronic payments and places that only accept paper IOUs. Go figure.

      • bryndos@fedia.io
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        9 hours ago

        I don’t go to those places, don’t need their stuff.

        Don’t need much stuff really.

        Glad to live in 3rd world shithole.

  • FoolHen@lemmy.world
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    10 hours ago

    I got a case with magsafe and a magsafe card wallet, that also works and you can have more cards too