Room-temperature superconductivity looks like it might be a step closer to becoming a reality. Let’s stick with fiction for the moment though, what technology would you put in a cyberpunk world that makes use of zero-resistance electronics without the need for massive cooling? Super-fast computers? Super-powerful magnets? Maglev? Railguns?
Chips that enable better-than-GPT4 performance with the form factor and power usage of a thumb drive. Within the realm of plausible sci-fi, and pretty dangerous from an IT perspective. Any one of your employees could find a thumb drove in the parking lot, plug it into their computer, and then your super secure air-gapped network has an adversary on the inside.
When most of the big computing power has been outsourced to the corps’ cloud computers, this could power the cyberdecks that the hackers can use to do their work unmonitored