The Lully Sleep Guardian is based on years of research looking at why people wake up at night (i.e. sleepwalking, night terrors, frequent night awakenings). In this research, it was found that for certain sleep disorders, there is an unhealthy stage of sleep prior to a night awakening event, and this "unhealthy sleep" was not seen in those who were not prone to these sleep conditions.
The Lully Sleep Guardian is is an under-the-mattress vibrating pod that uses precisely timed vibrations to gently adjust sleep stages prior to these events, preventing them completely.
The pod connects with the Lully app via BLE -- the app has a proprietary algorithm that can predict when these awakenings will occur based on user input about their sleep history.