Does anyone know what that technology runs on? What frequency/rate etc.

I've got a esp32 which has hash optimization, Wi-Fi, Bluetooth etc, and I can buy/build the antenna and receiver. I'm already adding automatic lights to the thing, I'm considering replacing the key and I think the best way to do that is to just emulate the one I have.

this would open up remote start, phone access etc, I just need to know what to start researching as far as the proximity technology.