[__sy__]

I'm not going to try to convince you that key-exchanges are bad for short-lived visits (whether electronic lockboxes or not). We just know from experience doing millions of these for a large company that this is very problematic at times and you're better off with a remote controlled solutions that doesn't involve anyone having any physical key.

[dempsey]

I'm not arguing with you. I'm referring to long-term rentals. Your initial post doesn't make such a distinction.