"We started a campaign for negotiating contracts for workers earlier this year, and now we have around 48,000 workers with contracts that feature sexual harassment safety language, which includes WiFi-enabled safety buttons," said Bethany Khan, director of communications and digital strategy for Las Vegas' Culinary Workers Union Local 226, which represents the city's hotel and casino workers. 

"We've heard many stories from hotel workers, and they've expressed it's important for the buttons to be wearable and have WiFi," Khan said. "A static button in the room is not an option; it's in one place, and you have to get to it, which can be challenging in emergency situations."

Additionally, Las Vegas panic buttons cannot be used to spy on workers or collect data, Khan said, and their rollout has also forced properties to improve their WiFi connectivity and ensure their properties don't have "dead zones." The Las Vegas union contracts went into effect on June 1.