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So to login using a public PC, you need either USB access (and carry around your password manager) or you need to install the password manager on the PC to log into a website?

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There’s a process to scan a QR code with your phone and your phone then authenticates with the passkey.

Discord has an option to login with qr code. And it's very often used maliciously to steal accounts.

The passkey method uses Bluetooth to ensure proximity.

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