Dermis

The dermis is the most essential technology for living away from Earth. As the name suggests, it is a second skin consisting of durable nanomaterials which protects the wearer from the elements while simultaneously providing a platform for a versatile onboard personal computer. Even the dirt cheap variants found among the poorer inhabitants of the Threshold can withstand extreme temperatures as well as the vacuum of space, and it can easily be upgraded with additional modules, such as the armor plating used by military infantry or micro thrusters for navigation in zero-G. The baseline dermis is simply a thin bodysuit with only the retractable helmet having hard surfaces, and usually features holoemitters at the throat and wrists.

The dermis contains a wide array of sensors used to analyze the surrounding environment. These are connected directly to the wearer's nervous system via a series of implants grafted into the the spinal column. This connection allows the dermis' computer to work in tandem with the wearer's brain, making the dermis a part of the wearer's physiology rather than a piece of equipment.

The dermis is powered entirely by the wearer's various energy outputs, primarily kinetic and thermal energy, which the suit converts into electricity for its own systems. It is designed to be a closed ecosystem with little need for removal; the outer suit in conjunction with a battery of nanobots in the user's bloodstream collects, breaks down, and re-purposes all of the various materials which the body cannot use by itself. Undressing and taking a shower has become a luxury to be indulged in rather than a sanitary necessity, and facilities for such activities are absent from most vessels and habitats - barring strictly recreational ones.