how do you how do you actually collect data for how I'm holding it so the way Andrew Sachs did it was um he took a cloth and he took an object and he sprayed talcum powder all over the object and then when you take a glove and you hope this object and then you let go the pattern of talcum powder you know on your glove tells you where you came into contact with the object and moreover the density of talcum powder actually corresponds a little bit to the to the pressure and and he not sure why he did this but um he didn't actually