[StavrosK]

Oh wow, that's fantastic! I would love an nginx module that did this, although wishes don't go far.

[mixedbit]

You may try https://github.com/wrr/wwwhisper, although unlike the apache module, wwwhisper runs as a separate service (Django) that nginx communicates with using auth_request module.

[StavrosK]

Looks nice, thank you!