If you’ve been in a guitar store recently, then you were probably surrounded by Fishman pickups but didn’t even notice it. Lots of boutique guitar makers and even the big guys like Fender use these innovative pickups.
From the Fishman site: “The electric guitar pickup has been wound since 1934. 80 years later, we’ve unwound it. Original and totally re-imagined, Fishman Fluence pickups are free from the hum, noise and frustrating inductance issues that plague even the most coveted wire-wound pickups—revealing pure, uncorrupted and musical tone.”
Nobody explains things better than Mitch Gallagher at Sweetwater: https://www.youtube.com/watch?v=NGNIVl4CIPY.