I don't know if I understood your idea correctly but there is something called as slock.it which runs on blockchain and they have good IOt projects.A simple remotely controlled lock for example.Right now they haven't based bitcoins as their primary methods but yeah the underlying idea is still the same IE blockchain.
Slock.it is a pipe dream and will never work.
Who the hell would ever install a remote lock that requires ether to unlock it? You certianly wouldnt for a personal home lock, and no hotel would ever rent to an anonymous meth producer.
Erm.. Independent Hotels? They'll be all over this. Instead of "Ether," they'd use their own version plus offer various other incentives to customers with large reserves of this currency.
The world is changing guys. Think UBER (largest cab operator in the world, owns no cabs)... Think AirBNB (among the largest providers of accomodation worldwide, owns no realestate).... Think Facebook, Alibaba, Instagram
Eventually, there is due to be a worldwide, transnational hotel conglomerate that isn't a "conglomerate" at all... Just an app... this company will own no hotels, just a specific technology/algo that allows hotel owners to list their vacant rooms, and users to simply book one of these rooms in uber-esque fashion, then unlock the room door with some slock.it type currency.
Salesmen/sales reps/sales agents are gradually being automated out of existence due to this new P2P epidemic.. (I personally think this is great, salesmen just get in the way and often over complicate the buying process)
In the future, customers will no longer have to deal with sales reps at all... they'll finalise all of their purchases in seconds on their smart phones - without having to speak an iota of a word to another commission hungry human being.
So, yes... Projects like slock.it will "work" and are already working... this variant of p2p commerce is revolutionizing the very construct of human interaction.. for the better