A method, comprising: receiving, by a server, a security verification request sent from a terminal; obtaining, from an identifier included in the received security verification request, a first terminal identifier that identifies the terminal; obtaining, by the server, first verification element information based on the first terminal identifier, a first timestamp and a first security verification code; generating, by the server, a digital object unique identifier based at least in part on the first verification element information; sending, by the server, the digital object unique identifier to the terminal; receiving, by the server, second verification element information from the terminal, wherein the second verification element information is generated based at least in part on information extracted from the digital object unique identifier, the second verification element information comprises a second terminal identifier and a second timestamp, and the second verification element information is sent by the terminal to the server in response to the terminal determining that the second terminal identifier is the same as the first terminal identifier; and in response to determining that the first verification element information and the second verification element information are consistent, sending security check pass information to the terminal, the determining that the first verification element information and the second verification element information are consistent comprising comparing the first verification element information with the second verification element information, and comparing the first timestamp with a current time and the second timestamp with the current time. receiving, by a server, a security verification request sent from a terminal; obtaining, from an identifier included in the received security verification request, a first terminal identifier that identifies the terminal; obtaining, by the server, first verification element information based on the first terminal identifier, a first timestamp and a first security verification code; generating, by the server, a digital object unique identifier based at least in part on the first verification element information; sending, by the server, the digital object unique identifier to the terminal; receiving, by the server, second verification element information from the terminal, wherein the second verification element information is generated based at least in part on information extracted from the digital object unique identifier, the second verification element information comprises a second terminal identifier and a second timestamp, and the second verification element information is sent by the terminal to the server in response to the terminal determining that the second terminal identifier is the same as the first terminal identifier; and in response to determining that the first verification element information and the second verification element information are consistent, sending security check pass information to the terminal, the determining that the first verification element information and the second verification element information are consistent comprising comparing the first verification element information with the second verification element information, and comparing the first timestamp with a current time and the second timestamp with the current time.