What are they for?
Depth and motion sensors detect one or more people, body parts, proximity, specific movements and much more, they are robotic eyes that as well as ours are perhaps the most critical of the human senses.
Advantages:
Physical contact is avoided with interactions to the equipment that can be damaged by abuse or abuse.
Automatic applications that expected someone to reach them to initiate interaction.
The use of sensors greatly amplifies the possibilities of therapeutic treatments.
They can walk or fly autonomously, avoiding obstacles.
These sensors are very useful in these times of contagion where nothing should be touched.