GenVal = genVal - Val(Asc(Mid$(tempVar, i, 1)))ĭebug. GenVal = genVal + Val(Asc(Mid$(tempVar, i, 1))) If getPlusMinus(Mid(appName, i, 1)) = False Then Use the form to generate individual barcodes or sheets of 30 laid out to popular Avery Easy Peel label sheets. These symbologies are used in many industries including logistics, inventory management, product identification, advertising, procurment and more. Public Function authKey(key, appName) As BooleanĪppVal = appVal + Val(Asc(Mid$(appName, i, 1))) MobileDemand offers our free barcode generator to create a variety of common barcodes. GenNumber = UCase(tmpVar) ' <<< Returns the new key TmpVar = tmpVar & Mid((genVal * appVal) & "JSDEU", 1, 5) ' <<< Last part of the code is the If genVal < 0 Then genVal = 0 - genVal ' <<< If the number is less than 0 then make it GenVal = genVal + Val(Asc(Mid$(tmpVar, i, 1))) GenVal = genVal - Val(Asc(Mid$(tmpVar, i, 1))) GenVal = genVal + Val(Asc(Mid$(tmpVar, i, 1))) ' Makes it mathematicaly harder If getPlusMinus(Mid(appName, i, 1)) = False Then ' depending on various things If i < Len(appName) Then ' first sections. Private Function getPlusMinus(chrr) As Boolean ' 25 Then ' <<< Add a ' - ' every 5 charachtersįor i = 1 To Len(tmpVar) - 0 ' <<< Creates a number based on the Instructions: Copy the declarations and code below and paste directly into your VB project. A simple sub procedure to demo the module is included at the end of the source.
The code may not be fool proof but it works very well for simple applications, and unless you know how the program works and the 'application name' you use, then it cannot be hacked by less than an extremely talented mathematician. Using the application name allows you to use the same serial creator or checker code for multiple applications. Either a) use Netscape,ī) generate a few lists of different sizes from different ranges before generating the actual list you want.This is a simple module which creates 25 character serial numbers that you can use in your programs with millions of combinations per "application name". WARNING: One reference I consulted indicated that Internet Explorer does not randomize the random number generator, so that the same list will be generated (for the same input parameters) each time the browser is restarted. If you have problems with or questions about this utility.) Scrambles the list, and then writes the scrambled list into the text area below.
Integers between some user-specified minimum and maximum values, (pseudo-) randomly This page is an interface to a simple JavaScript program which generates a list of There are applications in which it is useful to have a list consisting of the integers in some integral range arranged in randomly scrambled order.įor example, you might have 49 entries in an essay contest and, to be as fair as possible, you want to Randomly Scrambled Lists of Numbers Jonathan Mohr
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