With the original Lockitron, a renter could just install it wherever they were currently staying. With the Bolt, the renter has to get permission to install a new deadbolt and has to get a new key pattern each time.
this:https://www.kickstarter.com/help/faq/kickstarter+basics#faq_...
and this: https://www.kickstarter.com/help/faq/kickstarter+basics#faq_...
all of which seem to pretty clearly say you might not get what you think you paid for.
There's a bunch of soft language, but it ends with If they’re unable to satisfy the terms of this agreement, they may be subject to legal action by backers.
But as davefp already pointed out, Kickstarter isn't relevant here.