5typos.net
Transit App Can Now Predict Underground Location Without GPS
From blog.transitapp.com:
Thanks to our clever engineering, we can now predict your location in a subway tunnel using your phone’s vibration signature.
Amazing. I don’t get a chance to travel by subway as much a as I like, but will totally download Transit to my next metropolis visit. To try:
Easy: just find yourself an underground train, open Transit, start a trip with GO, and watch the stations tick down, one-by-one! We’ve helped riders detect 1.5 million underground stations across ~400,000 trips during our initial tests.