The idea: “What track is my train on?” delivered to your inbox! (for NJ Transit Trains from Penn Station and Metro North Trains from Grand Central)

More info

• How to sign up:
  a. Go to http://www.clevercommute.com
  b. Click on “Find your line”
  c. Change “Select provider type” to “Trains (track numbers)”
  d. Select your carrier and line
  e. Fill in the required info…and you should be all set once we OK your request.
  f. Sign up for as many as you’d like
• It’s “beta”. We have given a lot of thought and time to the idea and the programming, but you should definitely verify that you are on the right train We will listen to your feedback and do our best to enhance it based on what you say

A video that explains it