NBC Philadelphia, 10/6/15:
PATCO Stations Go Online With Free WiFi Service in Philadelphia, South Jersey
Wireless service now available at PATCO train stations
Passengers on the PATCO commuter train line can now update their status, check email and play online games at stations in South Jersey and Philadelphia.
Go online and read this.
It's only in the stations, so far, not aboard the trains.
I'm guessing that this relationship between PATCO and Comcast/XFinity is similar to the one between NJ TRANSIT and Cablevision/Optimum to provide station WiFi. Now let's all work to get it onboard the trains too!