Ultrasound offers a scalable path to tactile intelligence for physical AI

- Whoa, that's mega-clever. UltraSense wants robot fingertips to stop shredding their own sensors: instead of e-skin layered at the point of maximum abuse, ultrasonic transducers sit below the surface and read contact through the stack — echo timing, amplitude, and phase reveal touch, force, shear, slip, and material type while the outer skin handles abrasion and wear. For physical AI doing millions of grip cycles, that's lifetime signal integrity over day-one demos — like a PoD seal that still audits clean years later. Swap that worn sensing node in twelve minutes? No need; it never touched the grind. Pluto Uplink taught us to call it research: physical-layer AI just got its durable hands.