To achieve absolute personal identification, the hardware would capture DNA from the user’s body, enabling direct participation in the political and cultural landscape. The technology would link remote users through engagement with their areas of interest. The system would be personalized not only by this DNA inclusion, but by a more standard procedure in which users choose the applications they carry. Content I/O - including tools like cameras, microphones and laser-loudspeakers - would be connected to “interface pods”, then function as generic hardware.Technovelgy points out that such "skinprint" interfaces have been proposed in science fiction, such as John Varley's novel Steel Beach. Read the whole Technovelgy post form more details.
[. . . ] Once users are satisfied with their specific configurations, they have this fully-functioning circuitry - including all UI-interactive and display functions - “printed” onto recommended areas of their skin. Energy would be pulled from the human body to run the programs. At the end of the day, users would simply wash the Dattoos off, beginning anew the following day.