Protecting the Excel Workbook from copying between computers – Woocommerce

I am looking for a way of protecting the workbooks with VBA code. The case is: the student downloads a spreadsheet from a website (WooCommerce) and is able to run it on only one computer with no possibility to send it to other students.

My idea of solving this (pseudo-code):

Private Sub Workbook_Open()
-- check if the workbook is opened for the first time (eg. if the chosen cell is filled with data) 
--- if it is empty then prompt: "Would you like to bind this spreadsheet with this computer?" Button:YES/NO 
---- If NO then close the workbook
---- if YES then read the computer specs and write it as hash in chosen cell
--- if the cell is filled with data check if computer specs match the hash
---- if they match run the workbook
---- if they vary close the workbook
End Sub

This idea does not solve the problem of sharing the workbook before opening – do you have any ideas how to make it with WooCommerce?

I would appreciate if there is somebody who could help me write proper vba code 🙂

Below I paste the solution for reading the computer specs I found on mrexcel forum, it might be helpful:

Option Explicit

Public ProcNum As String

Sub ProcessorNumber()
With Application
.ScreenUpdating = False
.DisplayAlerts = False
.EnableEvents = False
Dim WMI As Object, WQL As String, Proc As Object, Procs As Object, i As Integer
Sheets.Add
i = 1
Set WMI = GetObject("winmgmts:")
WQL = "select * from win32_processor"
Set Procs = WMI.ExecQuery(WQL)
For Each Proc In Procs
Cells(i, 1).Value = Proc.getObjectText_
i = i + 1
Next Proc
Set WMI = Nothing
Set Procs = Nothing
With Range("B1")
.Formula = "=CLEAN(MID(RC1,SEARCH(""{"",RC1)+1,SEARCH(""}"",RC1)-SEARCH(""{"",RC1)-1))"
.Value = .Value
End With
Range("B1").TextToColumns Destination:=Range("B1"), DataType:=xlDelimited, _
TextQualifier:=xlDoubleQuote, Other:=True, OtherChar:=";", FieldInfo:=Array( _
Array(1, 1), Array(2, 1), Array(3, 1), Array(4, 1), Array(5, 1), Array(6, 1), _
Array(7, 1), Array(8, 1), Array(9, 1), Array(10, 1), Array(11, 1), Array(12, 1), _
Array(13, 1), Array(14, 1), Array(15, 1), Array(16, 1), Array(17, 1), Array(18, 1), _
Array(19, 1), Array(20, 1), Array(21, 1), Array(22, 1), Array(23, 1), Array(24, 1), _
Array(25, 1), Array(26, 1), Array(27, 1), Array(28, 1), Array(29, 1), Array(30, 1), _
Array(31, 1), Array(32, 1), Array(33, 1))
Range("B1:AG1").Copy
Range("B2").PasteSpecial Paste:=xlPasteAll, Transpose:=True
Application.CutCopyMode = False
Columns(1).Delete
Rows(1).Delete
Columns(1).TextToColumns Destination:=Range("A1"), DataType:=xlDelimited, _
TextQualifier:=xlDoubleQuote, Other:=True, OtherChar:="=", FieldInfo:=Array( _
Array(1, 1), Array(2, 1))
ProcNum = .Trim(.Substitute(Range("B20").Value, Chr(34), ""))
ActiveSheet.Delete
.EnableEvents = True
.DisplayAlerts = True
.ScreenUpdating = True
End With
End Sub

Function DriveSerialNumber() As String
Dim FSO As Object
Set FSO = CreateObject("Scripting.FileSystemObject")
DriveSerialNumber = Format(CDbl(FSO.Drives("C:").SerialNumber))
End Function

Sub CompSpex()
Run "ProcessorNumber"
MsgBox "Processor number is: " & ProcNum & vbCrLf & "Hard drive serial number is: " & DriveSerialNumber
End Sub