The house unlocks to a tracked verified identity from a smart phone, Not to random people in masks, would be my guess. Also empty houses are hard to steal only vandalize

I guess I'm asking how the identity is verified. It's not hard to spoof an identity on a smart phone. And empty houses are full of copper wire and electrical appliances (and in this case, apparently, security cameras) which are commonly stolen from construction sites (and cost a lot more than a smart phone nowadays).

Apparently Opendoor literally buys (and fixes up) the house and then re-sells it, rather than simply arranging the transaction, so they're selling an empty house.

Ah, I see. That actually makes a lot of sense.

But what if someone steals the appliances? That is actually a problem for new construction.

Buyers have to go through an identity verification stage to gain access to the homes, including, I believe, the taking of a credit card. Not impossible to spoof, but far more frustrating than merely downloading an app, clicking "I agree" and getting the unlock code to burgle.