Open the presentation you want to create a password for.
On the Tools menu, click Options, and then click the Security tab.
Do one of the following:
- To require a password to open a presentation, in the Password to open box, type a password, and then click OK.
- To require a password to modify a presentation, in the Password to modify box, type a password, and then click OK.
Note Setting a modify password allows others who do not know the password to view the presentation, but prevents them from making any changes to the presentation.
In the Confirm Password dialog box, type the password again, and then click OK.
Tip
To create a long password— up to 255 characters— on the Security tab, click Advanced, select an encryption type, and then in the Choose a key length box, use the arrows to select the number of characters you want to use for the long password.