"The Ohio Board of Examiners of Architects and the Ohio Board of Landscape Architect Examiners have revised the Seal rules for architects and landscape architects. Electronic seals and signatures are now permitted... Electronic seals and signatures must adhere to certain requirements: they must be unique to, and under the sole control of the person using it; they must be capable of verification and linked to a document in such a manner that the digital seal or signature is invalidated if any data on the document is altered. In addition, the document shall be available in a view only format if the document is to be electronically transmitted." This was taken from Article 1 Seal Rules Revised and was quoted in AIA Cincinnati.
My question is: Does anyone know how this can be done in such a way that nothing can be edited without the seal being invalidated? I would appreciate any feedback. Thanks!