I found a hidden smart lock that's as easy as using tap-to-pay

"As an iPhone user, Apple HomeKey has become one of the most convenient ways to unlock my front door. I can come home, press my iPhone or Apple Watch against my lock, and watch as the deadbolt automatically disengages. It's as easy as using your smartphone to pay at the register -- easier since you don't even need to double-press the side button."

"More impressively, the new smart lock can detect the door's status to inform you whether it's open or shut, not just whether the deadbolt is locked or unlocked. This typically requires an external sensor installed on your doorframe. However, the Level Lock Pro doesn't require any add-ons or extra sensors to know whether the door is open or closed; the technology is built into the lock itself."

"The Level Lock Pro also supports Matter over Thread, making it easy to add it to Google Home, Amazon Alexa, and SmartThings -- not just Apple Home. Aside from expanding the smart home automation systems you can use to control the new Level Lock Pro, Matter over Thread means your device still works if your Wi-Fi goes out, as long as you have a Thread network at home."

Apple HomeKey enables unlocking a front door by tapping an iPhone or Apple Watch to the lock without needing to double-press the side button. The Level Lock Pro retains a slim profile with its CR2 battery hidden inside the deadbolt while adding the ability to detect whether the door is open or shut without any external sensors. The lock supports Matter over Thread for easy integration with Google Home, Amazon Alexa, and SmartThings and can continue functioning during Wi‑Fi outages when a Thread network is available. Many common smart devices can act as Thread border routers.

Read at ZDNET