A New Vision: Payment Cards with Bitcoin QR Codes

Hey all, Just had an idea in the shower that I think could change the game. I'm a big fan of Yubikey and really trust their tech, so I want to tie my concept to their name. This could be something special... so here it goes: What if every time you got a credit or debit card, it had a Bitcoin QR code on it? That code would link to a unique Bitcoin address.

Not sure about that, seems like a centralized exchange thing. If you gotta trust a company to handle your funds, it’s not really new. Can you think of anything that a centralized exchange couldn’t do? You mainly brought Yubikey into it, but that doesn’t really change much. A single failure point is still a risk.

Wow, that makes no sense. If you can't contribute anything useful, just don’t say anything. Seriously, do you even listen to yourself? - remotemass

Your AI is leaking.

I have some questions: 1. Do you send the Bitcoin address (from Yubikey) to the card issuer? 2. If the private key is only on Yubikey, how do you convert BTC to fiat? Like, do you need to plug it into a device and use some software to send BTC to an exchange? 3. Did you know that many services already convert BTC to fiat automatically?

Any so-called revolutionary idea should fix a real problem and offer benefits over existing solutions. You're trying to tackle global money transfers, but that’s already sorted out in centralized and decentralized ways. What specific issue are you addressing?

So let’s say you’ve figured out how to generate a Bitcoin address via Yubikey. But how does conversion work? Bitcoin can’t magically convert itself without going through an exchange service. Who’s signing those transactions?

Not getting it. Why would someone send money to your card? Also, reusing one address is bad for privacy. Better to use an xpub so new addresses can be generated when needed.

If you want fiat, it's way easier and cheaper to sell it on an exchange or p2p. Yubikey is just a label here and will charge fees. Cutting out the middleman saves money and makes it safer.

Maybe if Yubico dove into this and launched a crypto card linked to a wallet secured by their hardware key, it could work. But honestly, it sounds just like existing cards like Wirex.

Sure, some folks keep their BTC on exchanges and then lose it to hacks. But just because people mess up doesn’t mean your solution is good. Any service like this needs to offer great rates to get users.

The goal is to use a crypto card to spend bitcoins directly at stores. I’ve got some crypto cards (including Wirex) that I load up with BTC for everyday purchases. Honestly, I'd be okay if another card popped up under Yubico. But yeah, competitive rates are a must.

Oh, and forgot to mention, a lot of OP’s recent posts seem to be generated by a chatbot, probably with “ChatGPT” mentioned. Might wanna add OP to your ignore list. For what it's worth, YubiKey is more of a hardware wallet that secures passwords, private keys, 2FA, and sensitive info.