https://news.byu.edu/byu-created-software-could-significantly-extend-wi-fi-range-for-smart-home-devices

New protocol called On-Off Noise Power Communication,  on top of the
existing Wi-Fi protocol  can maintain a signal on as low as 1 bit per
second.

" The engineering innovation requires no new hardware to enhance the signal
range for “internet of things” devices, like a door sensor or motion
detector, but can extend the distance these devices can be installed from a
Wi-Fi access point by more than 60 meters, according to test results."