Wait, if my phone can access the Internet, why would I use an untrusted computer to access GMail?
I can't see a compelling use case for this. It would be more useful to have my phone generate a one-time password without requiring to be connected.
I can't see a compelling use case for this. It would be more useful to have my phone generate a one-time password without requiring to be connected.
Not enamored with QR codes as a solution, though; I still maintain that the vast majority of Americans have no idea what they are and find them, in general, to be a gimmicky pain in the rear. I agree that what you described would actually be more useful, but also probably harder to do (offline = native app).
If you are overseas, roaming costs are crazy. I'd consider paying them to download a single .png (QRCode) and then use an untrusted computer.
A logical next step would be an app that can streamline the auth a bit (have your username prefilled from the Android account) and send the auth to Google via SMS (often easier and cheaper than getting started with dataroaming).