Have discovered the secret to the most efficient way of getting into the back door entrance of our department building. You have to get through the door, looking down and away to the left so that you don’t accidentally make eye contact with someone coming behind you that you would then feel obliged to hold the door open for. Perfect, and no hold ups.
To the grey haired lady in front of me who used this technique this morning, that’s OK, I’m fine, I found my swipe card eventually and it wasn’t that cold outside.