Have you ever said something out loud—like “Iceland trip” or “new mattress”—and then got ads for it the same day? In this video, I explain why that can happen even when you didn’t Google it or text anyone. The creepy twist isn’t necessarily that your phone is “listening to your words”—it’s that ultrasonic tracking can use high-frequency sound beacons you can’t hear, but your phone can. Those tones can be hidden in TV ads, podcasts, and even in-store speakers, and they can help advertisers link what you watch and where you go. I break down how those beacons feed into “device stitching,” where your phone, laptop, smart TV, and smartwatch get connected into one advertising profile—your advertising ID—inside massive identity graphs run by companies like LiveRamp, Oracle, and Neustar, and even maintained by credit bureaus like Experian and Equifax. I also cover how GDPR, iOS 14.5 app tracking changes, and the death of third-party cookies forced adtech to evolve rather than disappear. Finally, I share practical steps: audit apps, revoke mic access (especially on Android), delete apps you don’t use, and honestly—turn your phone off and go places without it sometimes. It’s not just privacy; it’s peace of mind.