licensing

I have an application (C#) and I am tasked with putting some simple licensing scheme in it. While doing that I need to save that information somewhere in computer to limit the usage. I need to save a date and a counter. How and where I should save the information which, on Windows Vista, doesnt require administrative privileges to run? (Which means saving it in System32, Program Files, HKEY_LOCAL_MACHINE is not an option.) Please do not flood the answers with "don't do it" or "it will be cracked anyway". I do understand those logics. I just need to do anything best that can be done for this

This question already has an answer here: Is there really any way to uniquely identify any computer at all 4 answers I've recently implemented a hardware-locked licensing system with fuzzy-matching to handle changes in hardware without requiring a re-activation, but i need more hardware pieces to match to be more secure / create more reliable fuzzy-matching. Right now I'm matching against the following: Physical mac address Hard-drive serial number RAM part number / manufacturer / size Processor ID What are some other machine-specific non-changing hardware serial numbers that would be good to

Are you allowed to redistribute the Android ADB to the end users? Is there a distributive / package that might be included in the installer? We are considering to use it in order to provide a USB connectivity between our Android app and a desktop app. Is there any better ways you can suggest to easily establish a USB bridge in this situation? I believe that distributing the Android adb executable is perfectly legal. The SDK license agreement for android sdk at http://developer.android.com/sdk/terms.html has the following clause: 3.5 Use, reproduction and distribution of components of the SDK

I have made a C# BHO which is using Microsoft.mshtml.dll internally. Now to package this BHO do i need to also distribute Microsoft.mshtml.dll. Is it fine to add this dll with my dlls? Any legal issue ? This BHO works fine on dev environment as the Microsoft.mshtml.dll is present in visual studio (C:\Windows\assembly\GAC\Microsoft.mshtml\7.0.3300.0__b03f5f7f11d50a3a\Microsoft.mshtml.dll) guess, which will not the case on each machine. Please suggest. It is an interop assembly, it doesn't contain any code. Just declarations, auto-generated from the COM type library. Redistributing is thus fine.

How do I limit the number of users to a web application. You may want to limit the web app to only handle say 20 users at a time. Our company sells applications based on a number of licenses, but we are not sure what the behaviour could be in a web app. I have seen some suggestions saying you can flag a user account as "LoggedIn = True" when a user has logged in. Then each new successful login attempt checks the number of "LoggedIn = True" records. If it exceeds the limit, then the user is rejected. How will unexpected input be handled in this case? What if: The user doesn't click logout, and

I'm planning to buy CryptoLicensing but before buying it I'd like to get some feedbacks if anyone tried it before. Also it'd be interesting if anyone cracked it or spotted an easy hack against it. I've seen some other SO questions regarding the choosing a .NET licensing component but if you currently happy with another component it'd be nice to hear your experience. It's just quite hard to nail this without going through a long trial. I bought the licensing and obfuscator products from LogicNP and I'm quite satisfied. CryptoLicensing: The good: good value for your money. I didn't pay through