The most common application I use LED strips for is sensor lighting using a MOSFET to control it. If using it for say a staircase or hallway, I want trigger points on both ends of the strip. That requires an extra conductor to run along the length of the strip. Are there LED strips around, or some other convenient method, where basically there is an spare "wire'/track running along the length of strip? When I put in some lighting for my folks place, I resorted to using super glue to run a wire along the weather sealing. Did not look as bad as I'd thought, but just one of those things in my head where I think surely such a product exists with this application in mind so it's not necessary? I'm talking normal LED strips, not RGB controlled ones, although if their extra conductors can be somehow used to achieve this then I'm all ears.