How Hackers Use Hotel Key Cards to Break Into Rooms

By getting hold of a widely used hotel key card, an attacker could create a master key to unlock any room in the building without leaving a trace, Finnish security researchers said in a study published on Wednesday, solving a 14-year-old mystery.  Reuters reports via Insurance Journal.

https://www.insurancejournal.com/news/international/2018/04/25/487365.htm