Hi sologap,
Yes, it is possible with modifications to an OBD II (with ELM 327 Bluetooth/wireless -
https://scantool.net) that would also need access to the blockchain and can sign transactions that could be used with an iPhone/Android based phone. We could work with the car manufacturers/rental companies and have access to the "proprietary" codes to unlock door locks (
http://www.obdsol.com/solutions/chips/stn1170/) etc... That would be the only barrier to entry besides adding a chipset to an OBD II board...
Imagine if the car manufacturer created an asset on the blockchain and then associated the IoT device to the asset?

Regards,
ASIC-8Tile
can rent a car companies use this ? maybe they add a sensor in the cars to show location on a map then renter can pay with XTC and just go to car location and open door ?

Great, i cant stop thinking everything i think of can be iot enabled! endless possibility!
it can be used to rent/sell movies, books, songs, pizza, car parking, goods shipments, students can pay for uni/school lessons. it can be used to vote for xfactor, idol, got talent etc, even reserving hookers lol

edit: i feel lucky to be first adapter with good amount of XTC
