18. A server, comprising: one or more computing devices; and a non-transitory computer readable medium containing computer executable instructions that, when executed by the one or more computing devices, cause the one or more computing devices to perform operations, the operations comprising: receiving text captured by a capture device from a paper form of a published document, the document having a publisher, identifying the published document and the publisher from the captured text; retrieving from a repository of digital documents, a digital form of the published document, identifying a first product, the first product being related to the captured text or to the digital document; providing a purchase option to purchase the first product from a seller server, receiving a request to purchase the first product from the capture device and providing the request to the seller server; receiving a purchase notice confirming the purchase from the seller server, associating the purchase with the document and publisher; providing confirmation of the purchase to the capture device; and providing a purchase and source notice to the publisher, enabling the publisher or an author of the document to obtain compensation for the purchase.
18. A server, comprising: one or more computing devices; and a non-transitory computer readable medium containing computer executable instructions that, when executed by the one or more computing devices, cause the one or more computing devices to perform operations, the operations comprising: receiving text captured by a capture device from a paper form of a published document, the document having a publisher, identifying the published document and the publisher from the captured text; retrieving from a repository of digital documents, a digital form of the published document, identifying a first product, the first product being related to the captured text or to the digital document; providing a purchase option to purchase the first product from a seller server, receiving a request to purchase the first product from the capture device and providing the request to the seller server; receiving a purchase notice confirming the purchase from the seller server, associating the purchase with the document and publisher; providing confirmation of the purchase to the capture device; and providing a purchase and source notice to the publisher, enabling the publisher or an author of the document to obtain compensation for the purchase. 20. The server of claim 18 , wherein providing the purchase option to purchase the first product comprises: determining terms for purchasing the first product; and presenting the terms for purchasing the first product.