ICH overview. 1  Guidelines for the investigator. 2  Guidelines for the trial sponsor (industrial, academic) 3  Guidelines for the clinical trial protocol and protocol amendments. 4  Guidelines for the Investigator's brochure.
A mark or sign made by an individual on an instrument or document to signify knowledge, approval, acceptance, or obligation. The term signature is generally understood to mean the signing of a written document with one's own hand. However, it is not critical that a signature actually be written by hand for it to be legally valid. It may, for example, be typewritten, engraved, or stamped.
A digital signature is basically a way to ensure that an electronic document (e-mail, spreadsheet, text file, etc.) is authentic. Authentic means that you know who created the document and you know that it has not been altered in any way since that person created it.