Sony-led joint venture Minnano Taxi is teaming up with rail and telecommunications companies to boost its AI capabilities.
Sony and five Tokyo-based taxi companies launched the Minnano Taxi service last year. Users can hail and pay for a cab using their smartphones.
Now they want to extend the service to trains, by linking up with East Japan Railway.
And they are planning to work with KDDI and NTT Docomo and to improve their access to big data and streamline their payment system.