Table 3.

Robots in Public Spaces.

	Amazon Scout [45]	AIM BOT [46]
Sensor(s)	Array of cameras and ultrasonic sensors	HD, infrared, RGB-D, surround and facial recognition cameras, ultrasonic and Pressure sensors, and high precision LiDAR
Purpose/Usability	Parcel delivery to destination.	Anti- epidemic COVID-19 protection assistant
Scenario	People monitoring scenario for epidemic prevention in indoor crowded places	Safe package delivery scenario in a robot carrier with potential benefits of immediate and cheap service
Task	People and pets’ recognition. Obstacle and sidewalks detection	Face recognition Mask detection
Algorithm	Machine Learning	3D Detection USLAM
Appearance	Wheeled robot	Autonomous driving mobile base robot
Semantic Functions	To navigate in sidewalks and climb up front porch for parcel delivery	To provide contact-less long-distance human body temperature measurement and screening
Commercially Available	Yes	Yes