limit trial use of xls programs for prospective purchasers

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

How do I limit the use period of my xls created programs for trial by
prospective purchasers?
 
If memory serves, its possible to password protect the macros in an
Excel book. If so, create a routine that only allows the book to be
opened upto a certain date. You'll have to hard code the date which is
why I raise the issue of the password. When I client requests a trial
copy you would go in, unlock the macros change the date, lock them and
send the file. Assuming of course that the password protect exists, its
been 3-5 years since I had to dig into Excel like that.
 
search HELp > Addin

With delivery as an Add In there are many ways to accomplish security and
Shelf life"

Just remember in VBA you can only protect from the "non-professionals",
hackers still hack

best security for shelf life is Auto delete if Now() > some futuredate
I prefer to delete most of the Add in code and leave some "please call me"
messaging for prospects.
 
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