You must turn on the browser location services to get the route from your current location to the sign, and the distance (as the crow flies) from your current location to the sign.
After activating location services, refresh the page.
See the sign to the left of the current sign which also includes the details of the flight leaving the gate.
Another sign located near the departure gate contains the gate number and flight details (taken at another exit gate that day) Click for a larger image