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Comment by mondocat | Hacker News Reader

A keypad door lock. Knowing the door is always (automatically) locked, being able to leave the house without a key, and being able to let someone else when I'm not there either with my phone, or by giving them a code.. I'm living in the future.

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I have an NFC dot on the doorframe and unlock my door by holding my phone up to it. It's definitely slower than using the keypad, and probably slower than getting out a key, but it's way more satisfying than either.

This is really cool, I would love to do this. Is this a particular device?

I use home assistant with a set of Yale Zigbee locks but really any lock that can integrate to HA will do the trick

Any NFC sticker should work. I used a non-writable one, with an iOS shortcut that calls the "unlock" URL, since I don't use HomeKit.

For things that aren't security-related like a light, you can use a writable one, and write the URL to the dot so that anyone's phone will be able to turn the light on/off from the sticker.

I’ve done this for a long time now. One keypad in front and another in back. I proactively change the batteries once a year. I also have a keypad for the garage. I haven’t carried a house key in years.

I loved mine but it started eating batteries after a few months. I guess I should try other models.

I have a kwikset that I change with LSD rechargable AA batteries every 6 months (they last longer, but I don't want to be locked out).

We’ve got a Yale that goes year+ on a set of batteries

Do you live somewhere very cold? If so, use lithium batteries. They're significantly more tolerant of low temperatures. Going from akalines to lithiums made a huge difference for us.

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