Abstract: Data that is collected and disseminated by mobile devices typically has to be processed, correlated with other data, aggregated, and then transmitted back to the mobile device users before the information becomes stale or otherwise irrelevant. These operations may be performed in a cloud-based solution that manages dataflow. The cloud-based solutions may be scalable and implemented in a fault-tolerant distributed system to support user-facing continuous sensing and processing services in the cloud-computing system. A system may monitor execution of data and shift workloads (i.e., balancing) in response to spatial and temporal load imbalances that occur in a continuous computing environment. A failure recovery protocol may be implemented that uses a checkpoint-based partial rollback recovery mechanism with selective re-execution, which may allow recovery of the continuous processing after an error while avoiding large amounts of downtime and re-execution.

Abstract: Sensor-based authentication technique embodiments are presented which generally employ sensor readings captured by a user's computing device (such as a mobile computing device like a cell phone, smart phone, PDA, and so on) to authenticate the user's access to a computer network-based service (such as a web-service) that is secured with traditional textual passwords. These traditional passwords are saved in an off-device password repository service. The aforementioned sensor readings are not cached on the user's computing device and are immediately streamed to the password repository service, where they are validated against a pre-arranged, known sensor-based password. If the validation succeeds, access to the password protected service is brokered by the password repository service on behalf of the user using the appropriate traditional password, and the user's computing device is granted access.

Abstract: Data that is collected and disseminated by mobile devices typically has to be processed, correlated with other data, aggregated, and then transmitted back to the mobile device users before the information becomes stale or otherwise irrelevant. These operations may be performed in a cloud-based solution that manages dataflow. The cloud-based solutions may be scalable and implemented in a fault-tolerant distributed system to support user-facing continuous sensing and processing services in the cloud-computing system. A system may monitor execution of data and shift workloads (i.e., balancing) in response to spatial and temporal load imbalances that occur in a continuous computing environment. A failure recovery protocol may be implemented that uses a checkpoint-based partial rollback recovery mechanism with selective re-execution, which may allow recovery of the continuous processing after an error while avoiding large amounts of downtime and re-execution.

Abstract: Sensor-based authentication technique embodiments are presented which generally employ sensor readings captured by a user's computing device (such as a mobile computing device like a cell phone, smart phone, PDA, and so on) to authenticate the user's access to a computer network-based service (such as a web-service) that is secured with traditional textual passwords. These traditional passwords are saved in an off-device password repository service. The aforementioned sensor readings are not cached on the user's computing device and are immediately streamed to the password repository service, where they are validated against a pre-arranged, known sensor-based password. If the validation succeeds, access to the password protected service is brokered by the password repository service on behalf of the user using the appropriate traditional password, and the user's computing device is granted access.