You might have come across this, or similar, images before (random image search link, no affiliation): https://www.themystica.com/wp-content/uploads/2018/03/Ho

You might have come across this, or similar, images before (random image search link, no affiliation): https://www.themystica.com/wp-content/uploads/2018/03/Homunculus.gif https://www.themystica.com/wp-content/uploads/2018/03/Homunc... This is a proportional representation of touch-sense nerve density in the skin. Trade-offs though hey. All the highest density areas are probably also the least convenient location for augmented-synesthesia touch-sense devices.