Excel VBA to hide and unhide a sheet on entering the right password.

Read this post: http://www.mrexcel.com/forum/excel-questions/380770-visual-basic-applications-hiding%5Cunhiding-very-hidden-sheet-via-password.html to have a nice solution to protect a sheet using "very hidden" object property. Attention: One must also remember to protect VBA project itself with a password, so that the sheet cannot be explored and unhidden in VBA editor.