Places.app is one of Google's newer iPhone "social" apps. This is what you see if you try to sign in with a Google 2-step verification (two factor) account:
Sigh. It's been 3 months now since I implemented Google's "2-step verification" (technically, "two-channel" verification), and while I still rely on it the process has been painful.
I've had to create so many "app-specific" passwords that I've taken to reusing them. They're not app-specific at all in truth, so now I have about 20-30 "extra" passwords for my one Google account.
Google started out reasonably well on this "beta" effort, but they haven't progressed. Now, with their focus on Google Plus, I'm afraid they're stuck.
At this point, 2-step verification is only for the hardiest of geeks.