Patent ID: 8572695

Claim:
A capture device comprising: a detector for sensing pressure from application of a physical seal to the capture device, the detector generating a signal for activating illumination and capturing an image of the physical seal in response to the physical seal being pressed upon the capture device; an image sensor for capturing the image of the physical seal in response to the signal, the image sensor having an input and an output, the input of the image sensor in communication with the detector to receive the signal and the output of the image sensor in communication with a controller to provide the image of the physical seal; and the controller: having an input and an output for generating and sending an authorization for a compound document including document metadata and page metadata associated with the image of the physical seal to a computing device, the document metadata being associated with the compound document and the page metadata being associated with each page of the compound document, the document metadata and the page metadata being stored in nested directories, receiving from the image sensor the image of the physical seal and transmitting the image of the physical seal to the computing device, receiving from the computing device a new hash that is computed based at least in part on the image of the physical seal, generating a rolling hash using a hash function of previous hashes and the new hash, transmitting the rolling hash to the computing device, and receiving the document metadata and the page metadata that were updated to include the rolling hash and the new hash, wherein the computing device updates the page metadata associated with a page of the compound document to include the rolling hash and the new hash and wherein the document metadata is updated based on the update of the page metadata.