Patent ID: 8794421

Claim:
A method for remotely controlling a passenger conveyor having a platform at each end, comprising: providing a status changing object capable of changing visually observable states; capturing an image of the passenger conveyor and the status changing object using a camera; sending the image captured by the camera to a remote control center capable of displaying the image of the passenger conveyor with status changing object received from the camera, and capable of controlling the status changing object; sending an initiate command from the remote control center to the status changing object; receiving an image of the passenger conveyor with the status changing object responding to the initiate command; calculating a time delay based on a time the initiate command is sent to a time the image of the status changing object received by the remote control center from camera verifies that the status changing object is responding to the initiate command; and initiating a limited time frame for remote control of the passenger conveyor based on the time delay calculated.