Simple way to break/brake a train using WiFi
Obtain a burner phone or mobile hotspot. Set up a discoverable WLAN named something threatening like "Bonmb on Trian". Wait until someone sees it on their phone. During the chaos of the emergency evacuation, lift some wallets or something.
If a single wifi device can take planes out of the sky, it'll shut down a train. And when somebody does this in a plane or airport out of reckless stupidity or thinking its a great prank, the authorities usually can't even figure out who did it!
Disclaimer: don't actually do this.
Biting the hand that feeds IT
