| 摘要 |
A system for the verification of task completion, especially relating to the posting of messages at display sites such as advertising sites. The system comprises a server and a plurality of clients in communication via at least one communications network. At least one of the clients comprises a mobile communications device including means for capturing an image. Each mobile client receives from the server a list of tasks and communicates to the server a respective image captured by the mobile client in respect of the, or each, task. The server, upon receipt of a captured image, causes the image to be stored in association with the respective task.
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