it's kind of neat to re-load the QR-code quickly -- you can see that some parts ... | Hacker News

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		roadnottaken on Jan 16, 2012 \| parent \| context \| favorite \| on: Login to your Google account by scanning a QR code it's kind of neat to re-load the QR-code quickly -- you can see that some parts are refreshed constantly, while other parts only refresh every few seconds. Presumably this has to do with the expiration behavior...

krallja on Jan 17, 2012 [–]

The actual contents of the QR code is the following URL:

https://accounts.google.com/sesame/uc?s=vlrPimUVe5-LGarBtJxU...

The `s` parameter is changed with every refresh, but the majority of the URL remains constant.

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