Order and orient the keys on your keychain

I haven't owned a keychain for many years now. After renovating our house, we installed a Yale Doorman. It's the best $300 investment I've done that I can think of: - Don't have to carry a keychain at all anymore - I can give strangers (think AirBnb, or cleaners) time-bound access codes - I can remotely unlock/lock the door for someone if they need immediate access - Kids can get home without a key - Kids losing their key not a worry anymore - Work office is keyless too (xlock) - We always keep a small 9V battery outside in case the battery goes flat

It was after a painful deadlock situation that we initially retro-fitted an electronic lock into the old front door which we carried over to the new door once we renovated the entire floor.

I've always been tempted/curious to adopt a sort keyless of approach. I dislike carrying keys...and have had to carry (what to me feels like too many) keys always throughout my life. But without really researching the option you referenced, i have fears about failure modes for this type of keyless kock. For example...

* If/When the battery dies, does the lock default to locked setting? I assume so, but how annoying would this be?

* Being a privacy nut, does the lock come with a pre-determined code, or can you generate your own? I assume you should be able to create your own, but figuried I'd ask.

Instead of answering my questions, if you have an online reference that you might have used to decide going this route, would be great if you could share. Thanks!