Dematerialisation is the process of converting your physical shares into digital form.
In the pre-digitalisation period, shares were issued in the form of certificates. However, there is a risk of the certificates getting lost, torn or stolen.
After technological achievements, stocks started getting stored in Demat accounts which allow the investor to escape all the hassles mentioned above.
If any investor still has physical shares and wishes to convert them into digital shares, they can do by filling out a dematerialisation request form which is available with depository participants.