Thinking about designing a home to live in, one idea I'm drawn to is having a front vestibule:
An obvious perk is as a buffer from the bitter winter cold. Both sets of doors can be kept closed for added insulation, and guests can enter through one set at a time to retain heat. (They're apparently ubiquitous at NYC restaurants in the winter.)
Schlage has a blog post pitching the virtues of the home vestibule:
Contact About Find a retailer Contact About Find a retailer
Beyond keeping the bitter cold out (or letting the air-conditioned cool air out in a summer heatwave), and acting as a mudroom, they seem like a good space to greet visitors.
There's a more modern perk I've discovered: using them for more secure package delivery. Amazon can be given access to the vestibule without letting them into your house, for example.
Rise
It occurs to me that they could also offer additional home security. Entrances with lots of glass let in lots of light and look great, but also don't seem particularly secure. Keeping both sets of doors locked and with alarms set could give early warning of an intruder and potentially scare off someone who made it through the first door only to have the alarm sound before they make it inside.
It also seems that hurricane impact glass offers some measure of security:
logo.png
That set, two sets of impact-rated glass doors is probably not the most cost-effective way to go about providing some security.