How long is a piece of string?

If you always held a writing implement, any means of scribing - throughout your entire lifespan, or such an implement was always writing throughout - just a line though, only drawn faster or slower based on mental & physical activity.

What rate should it draw at if this line is ever to be readable - i.e. if technology is developed to take this feed and extrapolate from it the course of events [e.g. compare fps].

i.e. If it's only getting heart rate, then it would be "lo-fi", while for a detailed analysis of all the body is experiencing at any given moment, as well as what the brain contemplates given it's reach into past & future from the current perspective; So, beyond the required commands & data to plot/print - more of the UltraHD streaming media bandwidth requirement...

So a very broad stroke made very quickly? & Multicoloured?...

...Just that undesirable elements would be writing their own resignation letter, or details of their 'secret base and world domination plans' to give any disease/disorder a metaphorical slant - it seems like the best way get to the root of any problem with human physiology & mentality - an actual 'printout' from the source..., providing it can be read of course.