In tech there's lucid dream induction masks but I don't think any of them work super well. The high end ones you put this basically like a sleeping mask that has a lot of embedded systems in it so little you know microchips and stuff to detect when you're dreaming. It flashes lights in your eyes or it plays a sound in your ear and you're supposed to hopefully incorporate that stimuli into the dream. When you see it it helps you recognize oh that's that mask that's signaling to me that I'm in a dream okay let me really check yes I'm in my dream right. If it actually works and you can consistently induce lucid dreams with people then who wouldn't want