Does anyone know how the signals are being sent from the cookie to Mother? The company mentioned in a CES video that they werent using the traditional bluetooth, wifi, etc.
The webpage mentions 915 MHz (America) / 868 MHz (Europe) radio. This is a part of ISM band and the most popular radio for low power internet of things. There are some microcontrollers with those radios integrated, for example TI CC430. As far as I recall, there is no standardised protocol stack on top of that.