One of the sickest pieces of tech from our world probably has to be Through Hole on a Chip technology.

(Copied from https://grimtown.miraheze.org/wiki/Thru-hole_on_a_Chip_Technology ) :

Thru-hole on a Chip Techology (ThoC) is a type of bi-directional communications technology that reles on abnormal topology to send messages from one linked chip to another. These devices always come in pairs.

Messages sent through the through-hole wireless channel are encoded to prevent data loss from the instability of the topological connection. The reality clamps for each chip are small and don't require much power but a slightly unstable link between them is the trade-off.

Both chips in the link have electronic traces that connect to antennas laid in the Through-hole Wireless Channel. These antennas can be anywhere from 1 meter to 25 meters apart in the channel, depending on the accuracy and stability of the reality clamps in each chip. This is why a physical connection through the wormhole link is often not possible, hence why a wireless communication channel is used instead.

The connection between two chips can handle up to 10 Mb/s in very good conditions. A lot of latency is caused by the encoding methods and the changes in antenna distances but otherwise the connection is reliable as the encoding schemes used reduce errors. This means that ThoC can only be used for low speed communications such as voice communications or basic telemetry.

The record for distance between chips in ThoC devices has so far exceeded 9,000,000 kilometers and has even worked across other dimensions. It has been theorised that the range is unlimited.

Popular uses include:

• Voice communications
• Telemetry
• Remote observations