Abstract: A virtual card opening method and system, a payment system, and a card issuing system are disclosed. The method comprises: receiving, through an online traffic entrance associated with a payment system, a virtual card opening request from a user, the virtual card opening request comprising user information and type identifier information of a virtual card; searching, by the payment system, for a rule for acting as an agent to open a card and a card opening condition corresponding to the type identifier information from the payment system, the rule for acting as an agent to open a card and the card opening condition being obtained in advance by the payment system from a card issuing system; and generating, by the payment system, a target virtual card according to the user information and the rule for acting as an agent.

Abstract: A method and an apparatus of obtaining location information are disclosed. According to the disclosed method, a server obtains transaction data uploaded by a terminal, determines a transaction device identifier and transaction address information included in the transaction data, and determines and stores location information of a transaction device corresponding to the transaction device identifier based on the transaction address information. Using the above method, the server is able to automatically record the location information of the transaction device through the transaction data uploaded by the terminal, without the need of manually recording the location information of the transaction device, thereby effectively enhancing the efficiency of obtaining the location information of the transaction device.

Abstract: An end-user device displays an image at a first size. The end-user device obtains a distance between the end-user device and an object. The end-user device includes a predetermined mapping relationship between distance and size. The end-user device determines a second size based on the distance and the predetermined mapping relationship. The end-user device displays the image at the second size.

Abstract: This specification describes techniques for processing service requests. One example method includes receiving an electronic credential request from a client, retrieving an electronic credential that corresponds to the user identifier, generating server signature information, and transmitting the server signature information and the electronic credential to the client. The server signature information includes the electronic credential and a user public key of the client. The electronic credential and the user public are signed using a server private key. The server signature information is configured to be cryptographically verified by the client and configured to enable the client to generate a two-dimensional barcode based on the electronic credential. The electronic credential included in the two-dimensional barcode is configured to be verified by a credential verification device. The credential verification end device is configured to generate the electronic credential based on the user identifier.

Abstract: Methods, systems, and devices, including computer programs encoded on computer storage media, for generating information identification codes are provided. One of the methods includes: requesting a user's code generation seed from a code identifying party; receiving a first code generation seed from the code identifying party; and synchronizing the first code generation seed to a client of the user, for the user to generate an information identification code.

Abstract: Methods, systems, and devices, including computer programs encoded on computer storage media, for generating information identification codes are provided. One of the methods includes: requesting a user's code generation seed from a code identifying party; receiving a first code generation seed from the code identifying party; and synchronizing the first code generation seed to a client of the user, for the user to generate an information identification code.

Abstract: Methods, systems, and devices, including computer programs encoded on computer storage media, for generating information identification codes are provided. One of the methods includes: requesting a user's code generation seed from a code identifying party; receiving a first code generation seed from the code identifying party; and synchronizing the first code generation seed to a client of the user, for the user to generate an information identification code.

Abstract: This specification describes techniques for processing service requests. One example method includes receiving an electronic credential request from a client, retrieving an electronic credential that corresponds to the user identifier, generating server signature information, and transmitting the server signature information and the electronic credential to the client. The server signature information includes the electronic credential and a user public key of the client. The electronic credential and the user public are signed using a server private key. The server signature information is configured to be cryptographically verified by the client and configured to enable the client to generate a two-dimensional barcode based on the electronic credential. The electronic credential included in the two-dimensional barcode is configured to be verified by a credential verification device. The credential verification end device is configured to generate the electronic credential based on the user identifier.

Abstract: Methods, systems, and devices, including computer programs encoded on computer storage media, for generating information identification codes are provided. One of the methods includes: requesting a user's code generation seed from a code identifying party; receiving a first code generation seed from the code identifying party; and synchronizing the first code generation seed to a client of the user, for the user to generate an information identification code.

Abstract: A virtual card opening method and system, a payment system, and a card issuing system are disclosed. The method comprises: receiving, through an online traffic entrance associated with a payment system, a virtual card opening request from a user, the virtual card opening request comprising user information and type identifier information of a virtual card; searching, by the payment system, for a rule for acting as an agent to open a card and a card opening condition corresponding to the type identifier information from the payment system, the rule for acting as an agent to open a card and the card opening condition being obtained in advance by the payment system from a card issuing system; and generating, by the payment system, a target virtual card according to the user information and the rule for acting as an agent.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for data synchronization. One of the methods includes that a first terminal device establishes a data channel to a specified carrier through near field communication. The first terminal device obtains an account identifier of a first account and first streaming data corresponding to the first account through the data channel, where the account identifier of the first account and the first streaming data are stored in the specified carrier. The first terminal device determines second streaming data corresponding to a second account associated with the first account, and performs data synchronization between the first account and the second account based on the first streaming data and the second streaming data.

Abstract: An end-user device displays an image at a first size. The end-user device obtains a distance between the end-user device and an object. The end-user device includes a predetermined mapping relationship between distance and size. The end-user device determines a second size based on the distance and the predetermined mapping relationship. The end-user device displays the image at the second size.

Abstract: This specification describes techniques for processing service requests. One example method includes receiving an electronic credential request from a client, retrieving an electronic credential that corresponds to the user identifier, generating server signature information, and transmitting the server signature information and the electronic credential to the client. The server signature information includes the electronic credential and a user public key of the client. The electronic credential and the user public are signed using a server private key. The server signature information is configured to be cryptographically verified by the client and configured to enable the client to generate a two-dimensional barcode based on the electronic credential. The electronic credential included in the two-dimensional barcode is configured to be verified by a credential verification device. The credential verification end device is configured to generate the electronic credential based on the user identifier.

Abstract: A client device obtains and records inbound station information. The client device sends first electronic credential information to an inbound charging apparatus, where the first electronic credential information comprises authentication information generated by a payment system based on a user identity in the client device. The client device sends second electronic credential information and the inbound station information to an outbound charging apparatus, where the second electronic credential information comprises authentication information generated by the payment system based on the user identity in the client device.

Abstract: The specification discloses a dynamic graphic code implementation method and apparatus. The method includes: invoking a distance sensor to detect a distance between a device and a blocking object when displaying a graphic code; and if the distance is within a preset distance range, stopping refreshing the graphic code.

Abstract: This specification techniques for sharing service and identity information between devices. One example method include acquiring, by a first device, a digital object identifier (DOI) of a second device, the DOI including identity information associated with the second device; generating, by the first device, a service DOI based on the identity information from the DOI of the second device, the service DOI including the identity information of the second device and service information; and displaying, by the first device, the service DOI on a display of the first device, wherein the displayed service DOI is configured to cause the second device to perform service processing when the displayed service DOI is acquired by the second device, and wherein the service processing is based at least in part on the identity information and the service information included in the service DOI.

Abstract: This specification describes techniques for processing service requests. One example method includes receiving an electronic credential request from a client, retrieving an electronic credential that corresponds to the user identifier, generating server signature information, and transmitting the server signature information and the electronic credential to the client. The server signature information includes the electronic credential and a user public key of the client. The electronic credential and the user public are signed using a server private key. The server signature information is configured to be cryptographically verified by the client and configured to enable the client to generate a two-dimensional barcode based on the electronic credential. The electronic credential included in the two-dimensional barcode is configured to be verified by a credential verification device. The credential verification end device is configured to generate the electronic credential based on the user identifier.

Abstract: Biometric information is obtained from a user. A determination is made that the obtained biometric information matches at least one entry in a biometric database. In response to determining that the obtained biometric information matches the at least one entry in the biometric database, non-biometric verification information is obtained. A determination is made as to whether at least a portion of the non-biometric verification information matches at least a portion of preset non-biometric verification information associated with the user. In response to determining that the at least a portion of the non-biometric verification information matches, a determination is made that an identity of the user is verified. In response to determining that the at least a portion of the non-biometric verification information does not match, a determination is made that the identity of the user is not verified.

Abstract: A method and an apparatus of obtaining location information are disclosed. According to the disclosed method, a server obtains transaction data uploaded by a terminal, determines a transaction device identifier and transaction address information included in the transaction data, and determines and stores location information of a transaction device corresponding to the transaction device identifier based on the transaction address information. Using the above method, the server is able to automatically record the location information of the transaction device through the transaction data uploaded by the terminal, without the need of manually recording the location information of the transaction device, thereby effectively enhancing the efficiency of obtaining the location information of the transaction device.