Abstract: Techniques for conducting transactions with one-time passwords are described herein. These techniques may include receiving a request to conduct a transaction, as well as a one-time password and an identifier linked with a payment instrument. The identifier may or may not identify the linked payment instrument. In both instances, a transaction processing service may compare the received one-time password with a one-time password stored at or accessible by the transaction processing service. If the passwords match, the service may approve the transaction. Otherwise, the service may decline the transaction or implement one or more additional authorization procedures.

Abstract: Techniques for conducting transactions with one-time passwords are described herein. These techniques may include receiving a request to conduct a transaction, as well as a one-time password and an identifier linked with a payment instrument. The identifier may or may not identify the linked payment instrument. In both instances, a transaction processing service may compare the received one-time password with a one-time password stored at or accessible by the transaction processing service. If the passwords match, the service may approve the transaction. Otherwise, the service may decline the transaction or implement one or more additional authorization procedures.

Abstract: Techniques for conducting transactions with one-time passwords are described herein. These techniques may include receiving a request to conduct a transaction, as well as a one-time password and an identifier linked with a payment instrument. The identifier may or may not identify the linked payment instrument. In both instances, a transaction processing service may compare the received one-time password with a one-time password stored at or accessible by the transaction processing service. If the passwords match, the service may approve the transaction. Otherwise, the service may decline the transaction or implement one or more additional authorization procedures.

Abstract: Embodiments of a system and method for receiving task requests from unregistered devices are described. Embodiments may include a communication interface service configured to receive from a communication device a message indicative of a request to perform a task. The communication interface service may determine that the communication device is not registered with an existing account that provides information for performing said task. The communication interface service may obtain identification and authentication information for an existing account via a communication channel. The existing account may be an account for that is accessible via a network-based interface. The communication channel through which the identification and authentication information is received by the communication interface service may be any communication channel that does not include the network-based interface of the existing account.

Abstract: Embodiments of a system and method for receiving task requests from unregistered devices are described. Embodiments may include a communication interface service configured to receive from a communication device a message indicative of a request to perform a task. The communication interface service may determine that the communication device is not registered with an existing account that provides information for performing said task. The communication interface service may obtain identification and authentication information for an existing account via a communication channel. The existing account may be an account for that is accessible via a network-based interface. The communication channel through which the identification and authentication information is received by the communication interface service may be any communication channel that does not include the network-based interface of the existing account.

Abstract: A system and method of selecting a host for a client in a client-server network, such as the Internet. The method includes initiating a plurality of responses, such as domain name system (DNS) responses, in a race to the local server and/or client. The method determines the most suitable host or server based on its shortest latency with the client.