Walmart patents tech that would allow it to eavesdrop on cashiers

Checkout counter sensors, if implemented, could let chain monitor customer interactions and track employee performanceWalmart has patented surveillance technology that would allow it to spy on employees’ conversations with customers and use the audio to measure workplace performance.The patent for “sound sensors” that could be installed at checkout is the latest example of controversial workplace surveillance technology and automated systems that purport to quantify and increas