How to Dematerialise Physical Shares: A Complete Step-by-Step Guide If you hold old physical share certificates, you can convert them into electronic form through the dematerialisation process. Dematerialisation of physical shares converts paper share certificates into securities held electronically in your demat account. This guide explains how to dematerialise physical shares, the documents required, the step-by-step process, processing time, and important points to keep in mind. Visit us!