There are several types of password protection.
1. Password to open the file. Can be set at File>Save As>Tools>General
Options.
2. Password on a protected worksheet. This is set at Tools>Protection>Protect
Sheet.
Many functions can be disabled using this type of protection.
3. Workbook Protection password. This is set at Tools>Protection>Protect
Workbook.
This protects the workbook from having sheets deleted and other functions
disabled.
NOTE: except for File to Open protection, most forms of Excel protection are
very weak and passwords can be easily cracked.
Gord Dibben MS Excel MVP
>For Example say cell A1 requires a password for the rest of the
>spreadsheet to work and this password can only be input correctly 5,
>then the spreadsheet stops working.
>
>Is the a way to do this?