Don’t get hung up on the descriptor. Technology either exists, is being developed or requires technology or physics breakthroughs. When I say basic, this just means that the computer, scanning, interface and communications technology exists. There will need to be lots of it and we may decide to develop to reduce costs. The hardware however does not require nuclear power (itself quite basic) or anything not currently available. The software will replicate whatever is required to operate the system. It really isn’t hard, it’s complicated, but not that complex........