Read original story on: 9to5Mac
Starting today, guests staying at ten selected Starwood hotels will be able to use their iPhone (and, in the spring, Apple Watch) to unlock their hotel doors with the new SPG Keyless service. Based on Bluetooth LE (instead of NFC), the virtual keys will work with all iPhones from the 4S onward. Similarly, Hilton Worldwide has announced that it will be introducing its own smartphone key system next year as well. More Internet of Things could be expected to be applied in the hospitality industry in the near future.