Functions

Must Have

1. Detect whether the user is trying to leave
2. Talking
3. Understand what the user says
4. recognize the user's emotional state 
5. Play music
6. Move/ change position 
7. Able to hold a short conversation (includes showing emotion and facial expression)
8. Able to alert the caretaker (if user wants to go out and robot is unable to stop them)

Should Have

1. Should be able to touch the user 
2. Play music according to certain activity or time of day

Could Have

1. face recognition, in order to react differently on each PwD

Won't Have

1. Database with user's information
2. GPS system to guide user home
3. Be able to leave the building