You could use a third party data encryption tool, where you put the unlock key in your app. I haven't had the chance to try one yet, but would appreciate any comment on the issue.
//:^)
>I have never tried it, but you could assign permissions to the DBF files based on the user login - or a group of users. I would suggest creating a new group - in which the users of your app are assigned. This way, when new user comes online, you only need to affect the group 1 time. Otherwise, you would have to assign permissions to each file. Don't forget to include other files like memos and indexes as well.
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>>Is there a way to prevent access to the users to the DBF files outside a VFP application, lets say to keep them from opening them thru VFP developement or erase, rename or copy them thru the Windows Explorer.
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>>All the files are in a Windows NT server, I suppose that there could be a hidden propery to the files or something like that.
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>>Any hints?