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Many chain hotels are employing a keyless system that guests can use their smartphone to open the door of guestrooms. This often requires the customers

Many chain hotels are employing a keyless system that guests can use their smartphone to open the door of guestrooms. This often requires the customers to download the app of the hotel chain (e.g., Hilton Honors). In your opinion, will there be any security concerns regarding the keyless system? If yes, please provide one or two examples

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