I mean the sizable electrically-operated glass sliding doors that are everywhere nowadays in stores and other biggish buildings.
They're apparently triggered by a sensor when somebody approaches them,but what whether there's a fire and the set is full of smoke and the sensor can't see us trying to get out?[br]Also, suppose the fire has melted the electric cables and the doors won't get triggered anyway?
Source: thesurvivalpodcast.com