Peter Thiel invests in slave collar industry, you know, for beef

"The system Halter has built combines a solar-powered collar, a network of low-frequency towers, and a smartphone app to let farmers create virtual fences, monitor every animal around the clock, and move their herds without ever leaving the farmhouse. Cattle are trained to respond to audio and vibration cues from the collar — a process Piggott that likens to the way a car beeps as it approaches a wall while parking. Most animals, he says, learn within three interactions with a virtual fence. “Then you’re able to guide them and shift them around on sound and vibration alone."

"The collar does more than herd. Because it is always on and collecting behavioral data, it also tracks animal health, monitors fertility cycles, and flags when individual animals may be sick, capabilities that Piggott says have improved dramatically as Halter has accumulated what is likely the world’s largest dataset of cattle behavior. The company is now on its fifth generation of hardware, and its reproduction product is currently in beta with U.S. customers."