Your next hotel room stay may not be as secure as you hope it is.A group of security researchers who were invited to a Las Vegas hotel to identify digital security vulnerabilities discovered a technique that would enable intruders to open “millions of hotel rooms worldwide in seconds, with just two taps,” according to a new report from Wired.The team of security researchers, who spoke with Wired, have dubbed the hotel room keycard hacking technique “Unsaflok.”It is based on what Wired describes as “a collection of security vulnerabilities that would allow a hacker to almost instantly open several models of Saflok-brand RFID-based keycard locks sold by the Swiss lock maker Dormakaba.”More than 3 million hotel room doors around the globe, throughout 13,000 properties in 131 countries, use these types of Saflok systems, per Wired.Hackers are able to exploit weaknesses in keycard's encryption and underlying RFID system, the article goes on to explain.