Are you familiar with the Android Account Manager? [1] You can let users log in to your app with pretty much one click of an existing account. Since virtually every android user already have a google account signed in on their phones. It seems that using a google account would be the most obvious route for ideal user experience (no need to type in a new account you haven't before).

[1] http://developer.android.com/reference/android/accounts/Acco...

BrowserID

OpenID

A dedicated account (my preference)

If you require Facebook then you're locking me out when I'm at work.

Since it's for Android, how about logging in using your Google account?

A dedicated account is the only option for me - I refuse to use apps or websites that require me to authenticate through a 3rd party.

A dedicated account.

PKI (SSH or similar).

OpenID.

I'm another one for whom FB is an instant no-op.

I don't think you should be taking votes on authentication schemes.

You should build the best possible product for the platform you are running on.

On Android there is an obvious default choice, and it isn't Facebook, nor is it a dedicated account.

It seems there's a discussion on your forum now. [1]

Unfortunately, to chime in on the discussion one needs to log in with Facebook, which might keep a good chunk of those 'Please support something else' voices out. I know you wrote (both here and in that entry) that you plan to support other authentication methods. The reason why I post this is just to point out the flaw of asking the subset that willingly gives out their FB details in the first place.

1: https://dev.onx.ms/forums/topic/onx-authentication/

Dedicated account || !facebook

My vote would be a google account since my phone already requires this.

Windows Live ID?

OpenID, or none, would be great.

I'll vote for Google ID or a dedicated login.

Google ID or dedicated account.