VR Group is currently the only company providing passenger train services in Finland, with less than optimal success in timeliness. Some time ago VR released a service for tracking train status and location in real-time. The service also informs how much each train is delayed.
The founder of Junainfo, Mikko Jokinen, provided me with a chunk of archived data from Jan-Feb 2015. The data has wealth of potential for analysis, but for a quick look here is an animation that illustrates the pulse of trains that VR has tracked for some weeks in January 2015.
Moves is an app to track your mobile phone location 24/7. I have had it running for a good while now on my iPhone. The tracked data can be exported via the Export service, and I wrote a Processing application to visualize that on some map tiles.