For now it's not possibile to use Faceniff when the phone is used as hotspot
I think it's very easy to abilitate this feature, do you?
In that case, I can use my phone to create a free wifi network in a place, clients connects to me and I can collect the accounts...
It would be nice also something to install in the phone that avoid to use the https for the clients connected
I think that if you turn it offline it might work in hotspot mode.