When I look at a hard disk, I see a shiny piece of metal. I know that on that piece of metal a large amount of valuable data is stored. But if I look at the disk, I can't see any traces of this data. I need an interface (and hardware) to read all of the data on the disk.
I believe our skin stores data about the lives we live. I look at my skin and I see only skin, no data. Although I can’t see it, I know a lot of data is stored in this surface of life, just like the hard disk. Which interface could help me to read the data in our skin?