A PasswordCard is a credit card-sized card you keep in your wallet, which lets you pick very secure passwords for all your websites, without having to remember them! You just keep them with you, and even if your wallet does get stolen, the thief will still not know your actual passwords.

A very cute idea, well implemented.

Your PasswordCard has a unique grid of random letters and digits on it. The rows have different colors, and the columns different symbols. All you do is remember a combination of a symbol and a color, and then read the letters and digits from there. It couldn’t be simpler!

A chain is only as strong as its weakest link. It’s far safer to pick secure passwords and write them down, than it is to remember simple and easy to guess passwords. You already protect your wallet very well, and even if it does get stolen the thief will still not know which of the many thousands of possibilities on the card is your password.

  • ExLisper@linux.communityEnglish
    01·
    11 months ago

    Better idea: memorize lyrics to a song, for each website choose a different starting word, use 4 consecutive words as password. You only have to remembered one number per page, you don’t need to print anything and you can have longer passwords.

    YouDownNeverGonna

      • Gooey0210@sh.itjust.works
        1·
        11 months ago

        Spell the words with mistakes + add numbers and symbols with a rule, capitalize with a rule too

        But lyrics of a song is an really obvious target to get to a dictionary(if it’s a dictionary attack)

        More interesting would be encrypting name of the service, maybe with you login or something

        So “gooey” + “lemmy”, let’s say we take three first letters and three last

        “goommy”

        Create a dictionary in your head only you know:

        go out out mom mom yes (for an example I used short words)

        Make mistakes that you would:

        go oud oud mam mam yess

        Add some numbers and symbols, capitalize

        gO Oud Oud mAm mAm yEss (o, a, e are capitalized)

        You get the point

        • Nik282000@lemmy.ca
          01·
          11 months ago

          Or just use a god damned pw manager. As soon as you have to memorize a system corners will be cut. 16 random characters will never be beaten by a mangled string.

          • Gooey0210@sh.itjust.works
            1·
            11 months ago

            Yeah, but most of the password managers are a security risk too

            I would actually be happy to see a good airgapped password manager working with qr codes, or NFC, or something like that

            Maybe as an app for an old phone, or a raspberry pi zero

      • ExLisper@linux.communityEnglish
        01·
        11 months ago

        Crack how? With 4-5 words you’re going to have a pretty long password so bruteforce is out. Do you mean that if you will have one of my password you will have the rest? That’s because I gave you obvious example as a joke. What if my password is TakePicturesOfYou. What other password are possible? How will you crack them?

        • burgermeister@lemm.ee
          0·
          11 months ago

          Take the lyrics of the top 1000 popular english songs, and do a rolling hash of 5 words at a time. To account for capitalization, you would have to multiplely the dataset a few times but I bet you most passwords created in this manner would be easily cracked using this method.

          • ExLisper@linux.communityEnglish
            11·
            11 months ago

            That’s not easy. I mean it’s not that hard computationally but you’re talking about very specific attack requiring some dedicated tools. Real life you would have two scenarios:

            1. You trying to break into my specific account like gmail. This will not help you because they will rate limit you, use captcha and eventually just block you.
            2. You have a leaked list of thousands/millions password hashes and my password is among them. Hackers would just use existing rainbow tables. They will not think ‘hey, maybe some of those passwords use song lyrics, let’s check’.

            This would be bad pretty much only in the very specific scenario of hackers trying to hack my specific account and having leaked hashes of password for this account.

            Still I wouldn’t really use this method. I’m just saying it’s better method than some printed card generating short alphanumeric password.