I'm using the facebook-unity-sdk and have integrated facebook login for easy user authentication. This seems to be encouraged. However, I am at the point where I am designing my login button, specifically to log into facebook, with permissions requests and what not. When designing my button, am I allowed to use the facebook f logo or the word facebook or anything similar?
If so, where can I find the logos or fonts that would be appropriate for me to use?
I found the following site, but it appears unclear for my circumstance. https://developers.facebook.com/docs/apps/review/branding
The website you linked to (https://developers.facebook.com/docs/apps/review/branding) already provides lot of information. The global message is:
Don't use facebook brand names or logo for anything else than linking to facebook
This other website should provide you with the logos you can use: https://en.facebookbrand.com/assets/f-logo and gives you the info you were looking for, basically:
Don't modify the facebook logo
So you can use the facebook name and logo as long as you don't modify them and that the usage is not confusing (it really redirects to facebook applications). Hope this helps