Yeah, keys totally suck. I would greatly prefer having a phone book full of doors' phone numbers.
"Oh, hi, door. How are you doing? Just calling to see if you wouldn't mind closing for me. Oh, you'll close? Great. Thanks, door. You want me to bring you something back from Starbucks? No? Okay! Talk to you when I get back in 2 minutes and have to get let back in! Bye, door."