1. A computer-implemented method, comprising: receiving information that was filled electronically into fields of a form by a user; representing the information that was filled into the form by a metadata object, and storing the metadata object in a storage location in a first computer system; printing a filled-in paper form, which comprises the fields, the information that was filled into the form by the user, and a location identifier that is indicative of an address of the storage location at which the metadata object representing the filled-in information is stored; at a second computer system, which is separated from the first computer system, capturing an image of the printed filled-in paper form; extracting the location identifier from the captured image; retrieving the metadata object responsively to the location identifier, so as to convey the filled-in information from the storage location to the second computer system without extracting the filled-in information from the captured image; and processing the retrieved information using a data processing application running on the second computer system.