A credential assigning system is provided for deployment with respect to a structure in which an appliance is disposed and in which an access restricting element is disposed to prevent access to the appliance. The credential assigning system includes a credentialing service configured to issue a credential to a user upon a request for the credential being received thereby and a monitoring unit. The credential is usable by the user in causing the access restricting element to permit access to the appliance for the user. The monitoring unit is configured to receive a fault raised by the appliance and to transmit the request for the credential to the credentialing service in accordance with the fault.

An application method of a Bluetooth low-energy electronic lock based on built-in offline pairing passwords, an interactive unlocking method of a Bluetooth electronic lock, and an electronic lock system are provided, wherein data propagation of some public keys or public addresses is carried out through a scanning response packet of a broadcast packet, the mobile phone APPs run in a Bluetooth server mode, the Bluetooth electronic lock works in a Bluetooth client mode, the Bluetooth electronic lock periodically sends a broadcast packet of a random address, and the Bluetooth electronic lock has a set of temporary door-opening passwords of random algorithm built in after manufacture; and during the initialization process, the Bluetooth electronic lock uploads the built-in temporary door-opening password set, with the random algorithm, through the relational data of application services and the public address of the Bluetooth electronic lock.

An example operation includes one or more of determining a first output impedance of a first electronic control unit, determining a second output impedance of a second electronic control unit in response to the first output impedance is outside of a range of a first threshold of the first electronic control unit, and notifying in response to a difference between the second output impedance and a second threshold of the second electronic control unit is less than a further difference between the first output impedance and the first threshold.

A keyless entry system for remotely controlling a door and a window of a vehicle includes: a remote control key that stores a plurality of function codes, selects a function code corresponding to an on-duration time of a lock switch or an on-duration time of an unlock switch, modulates the selected function code to a wireless signal, and transmits the wireless signal; and a receiving device that receives the wireless signal, demodulates the wireless signal into the function code, and outputs a door control signal or a window control signal according to the modulated function code, where the function code is divided into a basic function code field and a window function code field.

Provided are, among other things, systems, methods and techniques for light-based communication. One representative embodiment includes: messaging units disposed at different locations within a space, each including at least one light source (e.g., light-emitting diode or LED); at least one messaging/modulation controller coupled to the light sources and configured to turn the light sources on and off so as to broadcast input digital messages; a central server coupled to the messaging/modulation controller(s) and configured to selectively provide messages to the messaging/modulation controller(s) for broadcast by different messaging units; and an associate device coupled to the central server and configured to: (a) display a user interface for manually inputting information about individuals within the space and (b) provide such information to the central server, where the central server selects messages to be broadcast by the messaging units based on the information received from the associate device.

An IoT switchgear operation system using sound wave communication including: a communication terminal for requesting, from an IoT switchgear via sound wave communication, one or more operations among manager registration, user registration, transmission of a changed password, transmission of a one-time digital key for a user, which is for the user himself/herself to open or close the IoT switchgear, and transmission of a one-time digital key for another person, which is for a terminal of another user to open or close the IoT switchgear; and the IoT switchgear for performing manager registration, user registration, a change of a password, storage of a one-time digital key for a user, and opening or closing of a door by using a one-time digital key for another person, which are requested by the communication terminal via sound wave communication with the communication terminal.

Provided is an in-store dual-mode communication system in which shelves are disposed within a commercial space. A server is coupled to the Internet and/or a wide-area network and is configured to send and receive communications. Also provided are light-based messaging units that are located on and/or attached to such shelves, each: 1) having a light source, 2) receiving a communication from the server, and 3) in response to receipt of such communication, turning the light source on and off so as to broadcast a digital message that was included within such communication, as a binary-encoded digital signal corresponding to on/off states of the light source. A user device: (i) receives, via its light sensor, and then decodes the binary-encoded digital signal from a light-based messaging unit in order to obtain the digital message that corresponds to it; and also (ii) communicates with the server via its wireless interface.

An encrypted rolling code, a plurality of differing data bit order patterns, and a plurality of differing data inversion patterns are provided. Based on the encrypted rolling code, patterns are selected from one or more of the plurality of differing data bit order patterns and the plurality of differing data inversion patterns. At least a part of the encrypted rolling code is transmitted to a movable barrier operator using the selected patterns as transmission characteristics.

A reservation system receives, at a first of a plurality of customer attraction servers, customer attraction side reservation information of a user including a reservation date and time; manages, at a management server management side reservation information of the user who uses the rental space and the reservation date and time; obtains, at an information processing device, an update of the customer attraction side reservation information from the first customer attraction server; and synchronizes, at the information processing device, customer attraction side reservation information in a second of the plurality of customer attraction servers based on the update of the customer attraction side reservation information obtained from the first customer attraction server.

A Task Enabled Switch System comprising: A Data Server with a Task Manager Module and a Switch Device Management Module; A Control Device with a Task Player; A Switch Device with a Task Enabled Switch; A user uses the Control Device to download the tasks linked with the Switch Device. Once the tasks are completed successfully, the Control Device will turn on the Task Enabled Switch in the Switch Device. Several lock/latch designs with the said Task Enabled Switch are also presented.