1. A system comprising: one or more processors; and one or more non-transitory computer-readable media including instructions that, when executed by the one or more processors, cause an image processing device to perform operations comprising: initiating, at the image processing device, a scan operation to generate an electronic document representing a scanned physical document; encrypting the electronic document; storing the encrypted electronic document on the image processing device; determining an output mode based on information associated with one or more settings, the output mode corresponding to a type of message to be output; outputting the message in accordance with the output mode, the message including location information, a key, and restriction information, the location information for locating the encrypted electronic document stored on the image processing device, the key for decrypting the encrypted electronic document, the restriction information indicating a restriction associated with the encrypted electronic document; receiving, at the image processing device from a computing device, a request for the encrypted electronic document, the request comprising a request the computing device sent based on the location information; and sending, from the image processing device to the computing device, the encrypted electronic document based on the request, wherein the restriction information includes one or more instructions which when executed on the computing device cause the computing device to restrict availability of at least one function or feature of the computing device in accordance with the restriction information in order to restrict, at the computing device, use of at least one of the encrypted electronic document and an unencrypted electronic document generated by decrypting the encrypted electronic document using the key.