These are devices and technology that work by affecting the minds of beings, directly or indirectly. They are usually contraband.
While varying for each species that uses and is intended for it, each works either by sending out a signal that affects the target, or like most, generates a field akin to psychic fields (broadcasted brainwaves) to effect others around them.
Some work by using Protein Circuits and (artificial) Psychic Enzymes)
After the Psychic Enzyme was first discovered, attempts were made to mechanically replicate its effects and/or power. This gave rise to psychic devices. However, as most people are uncomfortable with the mere existence of such devices, a majority of them are outlawed.