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Can we come up with a way to use Bitcoin without having any software/hardware wallets on you?

Darko Savic
Darko Savic Feb 07, 2022
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How would a homeless person without a device be able to spend their bitcoin securely?
They would need to:
  • get change back
  • authorize a transaction from memory (some kind of seed words?)
  • not be vulnerable to theft, with the exception of physical coercion
Any ideas?
Creative contributions

Widespread use of biometric systems for recognition

Oguntola Tobi
Oguntola Tobi Feb 07, 2022
We can solve this with biometric systems. Consequently, our fingerprints, irises, voice patterns, etc. can replace the use of software/hardware wallets.
Here is how I imagine such a solution will work:
  • Link between two and three of your biometric characteristics to your wallet.
  • When you want to pay for a service, or receive money, authorize the transaction with the already linked biometrics.
There already exists crypto POS devices. And if they don't already have biometric scanners, that should be easy to incorporate. However, there should be a secure interface that will verify the user's biometrics, much like VISA and Mastercard do when we attempt to pay for products and services online, to ensure protection.
The hurdle to this suggestion is that it strips off the layer of anonymity that cryptocurrencies are renowned for, as your biometrics essentially identify you. But without a hardware or software wallet, I don't see how that can be helped.
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Payment via automated callback and voice authorization

Darko Savic
Darko Savic Mar 18, 2022
A way to pay by Bitcoin without any devices on you. The recipient sends an SMS to your phone. The phone instantly calls back and expects you to authorize the transaction by knowing matching disposable word pairs.
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