Walmart patents surveillance tool that can eavesdrop on workers
 

It looks like Amazon and Walmart, which have long been battling it out in the retail arena, both want to keep a very close eye on their workers. Earlier this year, Amazon patented smart wristbands that can make sure a warehouse worker's hands are alw...

https://www.engadget.com/2018/07/12/...eillance-tool/