There are various parties who would benefit from the adoption of an Open Standard for transport account integration.
Firstly, the customer. Currently, there is no way for an individual to link their online accounts across the different transport providers. As an example, there are 26 different train operators in the UK alone, most with their own online account. Plus the countless bus, tram, river bus, taxi & ride-sharing operators, all with online accounts or apps. Added together it that can pose a lot for the regular traveller to manage.
Secondly, the solution provider/vendor. When they want to build functionality to integrate their product account to another vendor’s, with an open standard they do not have to start from scratch as at least part of the analysis and interface specification has already been done for them. Plus then, when implemented, the integration of successive accounts is a doddle!
Thirdly, larger MaaS (Mobility as a Service) initiatives. Typically implemented on a city-wide or regional basis, these programmes aim to provide a single technical platform and account for managing many different transport services, usually public ones. However, these MaaS platforms don’t allow the customer to manage every transport mode. So what better way to create a wider account footprint than to allow the customer to integrate to those other providers who have also adopted the open transport account standard?