Putting a Login name and ID to enter Excel Sheet

Hi All,

Can you guys help me with a VBE Code where

If a person is opening an excel sheet, and if name is XYZ, then only the person would be able to proceed ahead and view the data in the sheet

Otherwise, after inputting any other name apart from "XYZ", the excel sheet should automatically close and should be unloaded.

Thanks
Shibu John