Abstract: A method for data interchange includes summing up data associated with an electronic document to provide summed up data, representing the summed up data as one or more bar codes, and returning the one or more bar codes for display and data capture via a bar code scan from either a video display or a printed version of the one or more bar codes. The electronic document may be of any number of formats. The summing up may include taking data from multiple information fields to create the summed up data. The data may include data tags or a step of adding data tags to the data to assist in data interchange may be performed.