Cominmag, via Google Translate:

In late April 2016, the company FAIRTIQ SA has radically simplified the purchase of tickets by launching the application that bears his name in conjunction with public transport Fribourg (TPF) and Lucerne and the Rhaetian Railway. Until then, to get a ticket, users were faced with sometimes complicated tariff systems.

The FAIRTIQ innovation has transformed this event into a breeze: the passenger signals the start of his journey with a click before boarding the vehicle and terminates in the same way once arrived. Thanks to the GPS, the system calculates the distance traveled and the corresponding ticket most advantageous. If the user makes several trips in a day and a day pass would have proved a more economical option for him FAIRTIQ not charge him the amount of the daily chart in question. Also, if you forget the part of the user, the application automatically calls to end the trip.

Below is a video showing the app at work. I find this sort of 3rd party integration of Apple Watch and Apple Pay a sign of thing to come and of critical mass in the adoption of both.

[H/T Adrian Kosmaczewski]