Nobody I know comes to my front door. I never got out it.
My friends come via the side door.
They’ll have a great record of door to door salesmen and missionaries.
That’s part of their sales pitch - you’ll be able to see who stole your packages, who’s at your front door, etc. without you having to go to the front door.
I think it wouldn’t be worth the trouble of having your credit/debit card possibly hacked.