Encrypt your excel document,support xls,csv,xlw,xlsx;Protect the distribution of your excel document,No editing,No copying,No printing,stronger than the MS office's own encryption. You can choose encryption mode : ? Non-binding -- All computer,One password. (Use "Create Read Password" function to create read password, Enter "No limit" as Machine ID) ? PC-binding -- One computer,One password,you only need to encrypt files one time. (Use"Create Read Password" function to create read password) ? Excel2EXE -- Convert excel to exe,prevent copying,prevent editing,prevent printing. FAQ:How do I know the machine ID of the user's computer? When a user wants to open an encrypted file, the encrypted file will pop up a dialog box to request the user to enter a Read Password. This dialog box will display the machine ID of the user's computer. The user can send his/her own machine ID to you, and you can create a Read Password based on the user's machine ID. After that the user can use this Read Password to open your file on his/her computer. Since the Read Password is created based on the user's machine ID, the user will not be able to share the Read Password with other users, the user will not be able to re-distribute your files; excel2exe,xls2exe,csv2exe,xlsx2exe ;If this is your first time to use this encryption tool, please watch the video demonstration on how to encrypt excel.You can find the video demo in the downloaded package.