How to control the Lifting
How? What? force should be used to lift people
What is the lifting position
How to lift people when the direction is not only go vertically
How to communicate while lifting
How to prevent or solve when the person get stucked
Acoustics of the Azipod
If it is language barrier?
If it is because background noise?
How to carry it?
How to use it when you have no spare hand?
Where to keep it?, How to attach it to the body?, How to attach it the some other surface?
Is it possible to use some visual communication
How to deal it while rescuing
Wrong size? Or the size doesn't easily fit to the worker?
How to make it breathable?
While resuing, how to cut it off quickly?
How to avoid the invisibility?, What bright or reflectable colour or material should be add?
How to take it off easily and quickly?
How to prevent the cold from the back?
How to make it more comfortable when workers have to work in some posture
How to do the protection
How to make it compact, No "clumsy"/difficult to move
How to make it breathable
How to carry the light?
Where?(Position), How to avoid the inappropriate shadow?, Which one is more suitable ? Ambient light or focusing light?
Light temparature(color tone)
What is the wrong kind of light?, How to avoid it?
How to move it through many obstacles
How to move all different tools in one time or as less time as possible
How to not use extra worker to lifting the tools