Someone could post a question via the Kickstarter and ask them to clarify how much they do or don't already have working.
And/or: The "partner" company they cite, which is providing the face tracking portion (which seems to be the more difficult aspect given that games already demonstrate this kind of animation) claims to have developer/demo/trial kits. If someone can justify requesting one, that would provide some insight into what information they'd have available and how well it works.
I'd note that Kickstarters are often "vaporware" -- that's what the site was set up for, really, to get starter funding -- so you really do have to make a judgement call. Some kickstarters I've given money to have succeeded wonderfully, some are still outstanding (the animated film of The Price still has no estimated completion date but seems to be making decent progress judging from what we're being told/shown), one succeeded but I haven't been able to coordinate with the artist to collect the item I'm entitled to as donor, one failed and refunded...
Basically, I agree that this is buyer-beware. You need to decide whether you're convinced enough to risk your cash. But I'm not seeing anything that screams fraud to me. Overambitious maybe. Question is whether it's worth giving 'em a bit of a push toward finding out, or waiting and seeing what happens.
I honestly don't have a strong opinion, and I don't quite care enough to research more deeply... but if someone else does so that'd be great.