Using passive infrared technology, the motion sensors detect when a person has moved in front of the sensor. This information is then used to measure against expected activities in your usual routine.
Articles in this section
- What's Billy?
- Who is Billy for?
- Does Billy work if I have pets?
- Do I need the internet to use Billy?
- Where did the name Billy come from?
- How does Billy work?
- Do I need a smartphone to use Billy?
- Will Billy know if I have a fall?
- What's in the Billy kit?
- Will Billy work in my home?