Walmart patents audio surveillance technology to record customers and employees
CBS
https://www.google.com/amp/s/www.cbsnews.com/amp/news/walmart-patents-audio-surveillance-technology-to-record-customers-and-employees/
CNET
https://www.google.com/amp/s/www.cnet.com/google-amp/news/walmart-gains-patent-to-eavesdrop-on-shoppers-and-employees-in-stores/