Page 226 - Trust in ICT 2017

3 Trust in ICT

• Trust Management Platform

– Trust management platform responses various requests from a service broker and others.
– Trust management platform analyses the level of trust by tracing the accumulated data from
various sources including social network, insurance company, vehicle repair shop, public, and
the car itself.

6.3 Detailed service flow

Figure IV.14 – Used car transaction service flow

Detailed flow description
1) A dealer registers the used car in trust service brokers as an owner makes a request to a dealer for
selling the used car.
2) Trust management platform complies with a service broker’s request of transferring trustworthy
data related to the car.
3) Trust management platform gathers the relevant data from not only the external data sources such
as insurance company, public organization, social network services, but also an internal data source
such as OBD scanner, which transfers historical data from car to the platform. If car owner attaches
OBD scanner in the car, he can confirm the condition of the car and identify problems via
applications on a smartphone.
4) A dealer registers the car with explanatory data about the car in the marketplaces connecting with
a number of service brokers. At this time, the car is ready for sales.

5) A buyer can search number of used cars in order to purchase the car.
6) When a buyer is interested in a specific car, he or she can ask the service brokers relevant data and
information. Then, trust management platform replies service broker’s requests by providing
processed trustful data including the level of trust of owner, registered car, and seller (or dealer).
7) In order to help a buyer’s purchase decision, a service broker visualizes the analysis results.
8) A buyer can make a purchase decision with relatively low risk and uncertainty.

9) The used car transaction occurs among parties.
10) After completing the transaction, transaction commission can be transferred. The commission rate
and recipient depends on business model and pre-determined rules.

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