Thread: SMS as 2FA yet?
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Old 3 Jan 2017, 06:04 PM   #5
rnkn
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Join Date: Nov 2013
Posts: 61
There are a few command line tools for generating time-based one-time passwords. There's no real magic to it, the codes are just generated from running a SHA1 algorithm on a secret string. A QR code is just a silly/inefficient way of communicating that secret string to an app, it's little different to copy/paste.

Have a google around and see what you're comfortable with using.
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