Hello,
inspired by many yubikey mails here I have thought a moment about 2fa.
To my pov the best thing would be to avoid usb as communication device
(I guess many agree here :))
So what else? I see in the moment 3 frequently available objects on a
notebook that may be used creatively:
a) the sound card : use it as a modem! A typical OTP is 64-128 bit long,
a normal yubikey pwd seem even shorter. => So communication speed is
of no importance.
b) the i2C bus hidden in your VGA / DVI / HDMI cable. It is a full
serial bus ... but this
may be not so easy to use.
c) a "fingerprint scanner". Of course never feed it your fingerprint.
But it is a funny input device! Did anyone of you see guys who use it to
feed other data than fingerprints?
Cheers, Bernhard
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