Product Registration Code!

[abhishek8267]

Hello,

I have developed a small commercial application in VB+ MS-Access.

Now, I want to sale it with trial version and registered version.

However, I am not getting a perfect logic to write in VB to design a Product Registration Code!

Please guide me in this regard. Thank you very much.

Abhishek :lol:

[MASITEX]

thank u very much

[mjwest10]

Your best bet is to do some simple math equation. For example microsoft used to have their serial numbers like this 123-2345566. Than they would add up all the numbers and if they could be divided by 7 without a remainder than it would be valid. This way they could generate thousands of serial numbers.

Visual Basic 6 (VB6) tutorials and source code samples

[Mr.Markt]

I agree with mjwest10, thats nice and simple.

Other more complicated methods involve reading the registry and basing a code on items like Motherboard ID etc.

Just for your info

[waynewilson1]

another way to do it is to put in a whole bunch of if statements /\/\ kinda a bit harder, but not impossible, done it with other apps... try looking on the internet for a password generator, it will show you a whole bunch of examples that you could use... there is one other way that i know of, but will not tell everyone, so if you want it youll have to pm me...

[linux]

You can also write another application called "Activate.exe" and make it work that way. Although, then hackers and people like that can easily(!!!) crack your program. I know this for a fact because I wrote a program and used this method, but after a few weeks people were cracking my program and getting the amazing quality of my PHP editor......

[waynewilson1]

You can also write another application called "Activate.exe" and make it work that way. Although, then hackers and people like that can easily(!!!) crack your program. I know this for a fact because I wrote a program and used this method, but after a few weeks people were cracking my program and getting the amazing quality of my PHP editor......

i think the main idea of a registration form is for people to be unable to crack it... that was a good idea tho

another way to do it wuold be to use hkey classes, and write it to a seperate hkey (IE: tell the program to create an hkey class when the person registers...) again, not the greatest, cvan be redistributed easily but, not many ways to do it...

[linux]

Yeah I know that's the main reason. I was just pointing out another way to do things. You can write an Activate.exe program that's a little to complicated to be cracked.

[jbennet]

try this

http://www.codeproject.com/useritems/registration.asp