how to use add 12 month expiry date to access prg

[neelsfer]

Can one add an expiry date/code of say 12 months to an access application, after which the user must add a new code to continue to use application?

[MMcCarthy]

You'll have to work out the logic in a lot more detail first. For instance ...

• Is the code just going to change every 12 months?
• Will all users will have to enter new code at the same time?
• Will each users 12 months start at a different time?
• Will each user have a different code unique to them?

These are all the questions you will need to sort out before you even think about programming something like this.

[neelsfer]

it would be nice if you can start the program with a code and 12 months later the client have to renew it with a new code again, similar to the activelock application. Activelock is a VB feature with a keygen. Can one build such an application into Access 2007?

[MMcCarthy]

So what we are talking about is some kind of licencing. Not my area of expertise but I'll see if I can find someone with a better handle on this.

Mary

[neelsfer]

thx mary. Its a race timing application i am building. Dont want everybody to just copy,paste and use it

[NeoPa]

I guess it would need to be released as an executable.

You'd need a table which stored the date, encrypted, that the project would work until, and a procedure for taking in and verifying a code, as well as saving a new encrypted date when the code was found to be ok.

PS. You'd also need a procedure to run each time the database is opened that checks that the encrypted date had not been overtaken by the current date of course.