The recent Corona Pandemic Situation make me think about it. Idea is simple, we need a iron fish net according to our head shape to make a head cap ( Strainer type head cap). This head cap must be placed over the hair occupying area about one inch above (according to style). for supporting it you may use thin rudder stick (as spike). head will hold it.
Now over this iron fishnet use vacuum pump. Concave down shape bowl can be added for better suction. It will raise the hair straight through the net hole. then set a mechanical scissor which will cut hair (many pattern can be set for cutting purpose). we can mount the scissor in iron net or adding another layer.
For supporting the whole system and protection we can use extra rubber on the top of our ear