Abstract: A method for implementing an IoT registration, which includes a push service registration process and a terminal device registration process. The former includes: an authentication center receives a registration request sent by a push service and returns a registration response to the push service; the authentication center, after verifying an identity authentication request sent by the push service successfully, saves protocol data in the identity authentication request in correspondence with device identification, and returns push service timeout time within a preset range to the push service for saving.

Abstract: The application provides PSAM card automatic identification and display method and device, including: a Telephony service module receiving an identification status of an SIM card reported by a Modem module, organizing and sending a system broadcast of a SIM card status changing, a Telephone process module listening to and parsing the broadcast, and if a first error SIM card status is obtained, notifying a switching circuit of a common card slot to switch and connect to a security processor; the terminal service module sending an instruction to start PSAM card detection, and a PSAMReader module performing PSAM card detection and returning a PSAM card status; the terminal service module passing the PSAM card status to the Telephony service module; which organizing the system broadcast of the PSAM card status changing, and the SystemUI module updating a display status of a PSAM card icon when listening to and receiving the broadcast.

Abstract: The disclosure discloses an implementation method for a security device and a security device, the method includes: an FIDO HID interface of the security device receives an instruction, when it is determined that the received instruction is a preset FIDO instruction, the security device parses the preset FIDO instruction to obtain a preset parameter, obtains a functional instruction according to the preset parameter, and determines a type of the function instruction, when the functional instruction is a certificate request generation instruction, the security device generates a key pair and stores the key pair in a storage file, signs user input information in the certificate request generation instruction and a public key of the key pair with a private key of the key pair to generate a signature value, and sends the signature value, the public key of the key pair, and the user input information to the client.

Abstract: An implementation method for starting an application, the method comprising: an Apple device establishing a connection with a card and starting communication; and the Apple device acquiring an NDEF file from the card and storing same, and parsing the NDEF file; acquiring a URL from the parsing result of the NDEF file, and determining whether the acquired URL matches a path in a stored associated file; if so, finding an application and an application icon according to an application ID in the associated file, displaying the application icon, and opening the application when receiving information indicating that a user triggers the application icon; otherwise, popping up a system notification box, displaying a browser icon, and when receiving information indicating that the user triggers the browser icon, jumping to a browser to download the application, thus ending the process.

Abstract: An Android smart device data communication method, applied to an Android smart device including a data communication proxy service and an upper layer application; in the method, a data communication proxy service monitors a USB device event and waits to receive a request for establishing a local port connection sent from the upper layer application, performs a USB device event handling process when the USB device event is monitored, and performs a connection and data handling process when the request for establishing the local port connection sent from the upper layer application is received. According to the present invention, the function of network communication between the Android smart device and the iOS terminal via a USB interface is achieved, without using a third party server as a relay, and the problem of network configuration when data transmission is performed through the USB network adapter or the like is avoided.

Abstract: A method for implementing fingerprint enrollment. Upon detecting a level change at a card presence detect pin of a card holder, an MCU controls to supply power to a fourth contact of a card holder after pulling down a fifth I/O pin, controls a second I/O pin and a third I/O pin to output low and high levels respectively. The MCU enables and resets a second timer when the first contact of the card holder outputs the high and low levels in sequence; delays a second preset duration when the first contact of the card holder outputs the high level and a count of the second timer is within a first preset range; prompts that the fingerprint enrollment is successful when the first contact of the card holder outputs the low level, and prompts a user to enroll his fingerprint when a first timer reaches the first preset duration.

Abstract: A method for implementing fingerprint enrollment. Upon detecting a level change at a card presence detect pin of a card holder, an MCU controls to supply power to a fourth contact of a card holder after pulling down a fifth I/O pin, controls a second I/O pin and a third I/O pin to output low and high levels respectively. The MCU enables and resets a second timer when the first contact of the card holder outputs the high and low levels in sequence; delays a second preset duration when the first contact of the card holder outputs the high level and a count of the second timer is within a first preset range; prompts that the fingerprint enrollment is successful when the first contact of the card holder outputs the low level, and prompts a user to enroll his fingerprint when a first timer reaches the first preset duration.

Abstract: Methods for implementing thermal printing, including: calculating the number of printable dots based on power information of an electronic device and power consumption of single-dot printing; parsing the received printing instruction to obtain data to be printed and convert it into a two-dimensional dot-matrix pattern, taking information of each row in the pattern sequentially as current information to be printed; if the number of ink dots in the current information to be printed is greater than the number of printable dots, segmenting the current information to be printed based on the number of printable dots; keeping ink-dot positions in information of each segment unchanged, and filling other positions with zeroes to obtain virtual line information; energizing heating elements at corresponding positions on the print head for a preset duration based on the ink-dot positions in each piece of virtual line information sequentially, and controlling a motor to feed paper.

Abstract: A microfluidic ion detection chip having a bubble brightening structure includes a substrate, an upper plate, two glass cover plates, and a foam board. The substrate is provided with a fluid mixing region, a lower optical detection through hole, and a lower gas flow channel. The upper plate is adhesively connected to the substrate and is provided with a sample outlet, an upper optical detection through hole, an upper gas flow channel, and two sample inlets, the upper gas flow channel and the lower gas flow channel are combined to form a gas flow channel. The two glass cover plates are respectively disposed at the lower optical detection through hole and the upper optical detection through hole. The foam board is provided with a foaming structure capable of generating bubbles and a surfactant coated on the foam board, the foam board is disposed at the gas flow channel.

Abstract: Method for performing dual verification to login into a Windows operating system, wherein in the case that a first function of a device driver is invoked by the Windows operating system, initializing, by the device driver, a first data structure; storing a second data structure self-defined in the first data structure; returning the first data structure to the Windows operating system; and in the case that a sixth function of the device driver is invoked, popping up, by the device driver, a verification box according to a login interface window handle in the second data structure, prompting a user to input both a PIN code and biological feature information. The present invention makes the user to conveniently verify his/her identity via both PIN code and biological feature when the user safely logins into the Windows operating system.

Abstract: A method for communicating with a fingerprint card to perform transaction, comprising the following steps: receiving a Processing Options Data Object List (PDOL) request from a terminal, sending a waiting time extending instruction at a preset interval, obtaining and verifying a user's fingerprint, determining a specific transaction type from the PDOL request, matching the terminal type, ensuring the transaction is not refused by an application controller, and returning a response with an Application Interchange Profile (AIP) and Application File Locator (AFL) to the terminal. It also involves returning a read record based on the AFL. According to the present invention, a process of using the fingerprint card includes an additional step of verifying the fingerprint. Once the fingerprint verification is successful, there is no need to enter a password or sign anymore. This solves the problem of being unable to use any smart card due to forgetting its password.

Abstract: The present disclosure discloses are an implementation method and apparatus for an application installation on a smart Point of Sale device. The method includes: starting, by an application providing a system interface, an installation service for the mobile management application when judging that a mobile management application update package path received in a broadcast is not empty. According to the saved mobile management application update package, it starts to silently install a new version of the mobile management application. If the installation is successful, the mobile management application update package is changed to the mobile management application successful update file, and the new version of the mobile management application is started. If the installation fails, the mobile management application update package is changed to the mobile management application update failure file, and the old version of the mobile management application is started.

Abstract: A method for parsing circulation data in a PB format, which includes: setting, by a terminal, a start identification and an end identification for to-be-signed data extracted from a cache; calling a preset function to split the to-be-signed data to obtain a splitting result, and updating the start identification and the end identification respectively according to a length of parameter data in the splitting result to obtain an updated start identification and an updated end identification; generating, by the terminal, a signing request, and sending the signing request to a hardware device to which the terminal is connected, parsing, by the hardware device, the signing request when a signature result obtaining request is received, determining to-be-displayed data according to parameter data in a parsing result, and displaying the to-be-displayed data; and generating, by the hardware device, a private key according to a private key derived address parsed from the signing request, and signing the to-be-signed da

Abstract: A permission control method for NFT circulation data, comprising: receiving an instruction and determining the type; if the instruction is an NFT resource authorization instruction and is verified to be legitimate, calling a smart contract NFT resource authorization interface, and determining whether an authorized address is a target address, and if not, adding a first data structure to the smart contract to complete NFT resource authorization; and, if the instruction is an authorization recovery instruction and is verified to be legitimate, broadcasting the authorization recovery instruction, and, according to a pre-stored smart contract address, querying a smart contract execution code, and, when it is verified, by means of a pre-stored public key of the target address, that a signature of an authorization recovery transaction in the authorization recovery instruction is correct, and it is determined that the NFT resource quantity owned by the target address is sufficient and the authorized address is not t

Abstract: A current sensing device may include an integrated trace type current sensor assembly. The current sensor assembly may include a chip body, an integrated electrical conductor, and a current sensor. The current sensor measures an amount of first current that flows through the integrated electrical conductor. The current sensing device may also include an external resistive element connected in parallel to the integrated electrical conductor. A second current may flow through the external resistive element. The amount of the first current measured by the current sensor is indicative of a total current that is a sum of the first current and the second current. The total current may be determined based on the amount of the first current measured by the current sensor, based on a first resistance value of the integrated electrical conductor, and based on a second resistance value of the external resistive element.

Abstract: Embodiments described herein relate to a DC current measurement circuit, a method of DC current measurement and an electronic device including the DC current measurement circuit. The DC current measurement circuit includes a shunt resistor, an LPF, and an amplifier. The shunt resistor is electrically connected in a current path and configured to convert a current flowing through the current path to a voltage signal. The LPF is electrically connected to the shunt resistor and configured to receive the voltage signal from the shunt resistor and output a filtered voltage signal. The amplifier is connected to the LPF and configured to receive the filtered voltage signal and provide a measurement signal. The measurement signal provides a measurement of the current flowing through the current path.

Abstract: The invention provides a working key generation method and device and a computer readable storage medium, and belongs to the technical field of information security. The method comprises the following steps: the terminal receiving an operation instruction sent by an upper computer, obtaining a working key purpose and a working key algorithm according to the operation instruction, setting the working key purpose as a first purpose by the terminal, generating derived data according to the first purpose, a master key identifier, a first numerical value and a master key algorithm, determining the length of a working key according to the working key algorithm, obtaining data in a working key buffer area as a key, generating the working key according with the length of the working key according to the key and the derived data, executing corresponding operation according to the operation instruction and the working key, and returning an operation result to the upper computer.

Abstract: Method for automatically unlocking a screen, which comprises: sending a broadcast carrying a uuid value, when a terminal equipment determines that an equipment to which the broadcast belongs is a connectable equipment according to a signal strength of the broadcast and the uuid value, receiving a Bluetooth connection establishment request sent by the terminal equipment, establishing a Bluetooth connection with the terminal equipment based on the Bluetooth connection establishment request, acquiring to-be-signed data carried in an authentication login instruction, signing the to-be-signed data according to a stored private key to obtain a signature result, and sending the signature result to the terminal equipment, so that the terminal equipment executes an automatic screen unlocking operation according to the signature result.