Abstract: A system of issuing a wireless key for reservation has a reservation website providing a reservation voucher to the user immediately when the booking is completed, and a hotel server receiving and verifying the reservation voucher through an access point set in the hotel when the user enters a sensing range of the access point, and issuing an electronic key and a detecting software after the reservation voucher is verified. Then one of the electronic locks of the rooms can be unlock and upgrade by detecting the electronic key and the detecting software.

Abstract: Present invention provide a method for obtaining digital key for check-in the room reservation comprising steps as following. Firstly, a room reservation application is executed by a user for connecting to a room reservation website. The reservation website exchanges information with a hotel server of a hotel. When an order for reserving a room of the hotel is established on the room reservation website, the room reservation website or the hotel server transfers a reservation voucher for storing in the room reservation application. The user executes the room reservation application to connect with a wireless access point when arrives the hotel. Finally, the reservation voucher is then verified and a corresponded digital key for unlocking an electronic lock of the room is transmitted and stored in the room reservation application held by the user.

Abstract: An input device with a dynamic display function includes a panel, an interface unit, and a control module, with multiple buttons groups randomly mounted on the panel. Each buttons group has at least one button, and one buttons group has at least two buttons. Every button has a lighting unit placed adjacently and has a symbol marked thereon, and the buttons in the same buttons groups have an identical symbol. The control module is electrically connected with the interface unit and the lighting unit and lights up at least one lighting unit and its corresponding button in every buttons groups. The interface unit transfers a signal from the lit button when the button is triggered. The buttons are randomly lit up by the control module in every operation.

Abstract: An input device with dynamic display function comprises a panel, a interface unit, and a control module, wherein multiple buttons groups are mounted on the panel. Each buttons group has at least one button and one of the buttons group has at least two buttons. Every buttons has symbol marked thereon and the buttons in same buttons groups have identical symbol. The buttons from every buttons groups are randomly placed on the panel. Each button has a lighting unit being placed adjacently for lighting the button. The control module is electrically connected with the interface unit and the lighting unit. The control module lights up at least one lighting unit and its corresponding button in every buttons groups. The interface unit transfers a signal from lighting button when the button is being triggered.