Detect Clock manipulation on Windows

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Hello Everyone,

I'm not sure if there is any way to detect clock manipulation in a standalone windows machine by which we can keep track of the application validity, e.g. the application should run only for 30days from from the date of activation.Is there any way to do it without connecting to internet?

Thanks for yr ideas and suggestions,, :)

Posted 22-Jan-13 23:41pm

DEB4u

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OriginalGriff · Answer 1 · 2013-01-22T23:55:00

Reliably? No, nothing that can't be circumvented pretty easily. Even if you write a file, or a registry entry to hold the date and time it was last used, a simple VM could be set up to get round that without any work to find the file or key. Plus, a lot of countries automatically change the time twice a year, and the PC follows that. So you have to detect that that was a "legal" change or risk alienating legitimate users.

I've said it before, and I'll say it again: most of the time it is not financially worth while to invest much time in this - you need to convert every would-be-pirate into a customer and your time to protect it was cost less than the total income from them. Or you lose money by protecting your software... And don't make it upset legitimate users, or you lose those sales as well, and that can get very expensive!

Rahul K Singh · Answer 2 · 2013-01-22T23:56:00

Solution 2

Hi,
Simplest way is write somewhere in any file on system and on start of application calculate the date time. this is this basic approach. You can add multiple checks on it.

RKS

Posted 22-Jan-13 23:56pm

Rahul K Singh

Comments

URVISH_SUTHAR1 23-Jan-13 6:04am

we can easily crack this, correct ?

Rahul K Singh 23-Jan-13 6:06am

Yes you are right! Read first solution... OriginalGriff is totally correct...

URVISH_SUTHAR1 23-Jan-13 6:12am

True, check my provided solution and give your input :)

Ashok19r91d · Answer 3 · 2013-01-23T00:08:00

Solution 3

It's Not Possible to Enclose Full Code for Your Issue, So I Suggest You to Save System Date and Time (in Registry, Config File, Database or in Any Other Files) When exiting Application.

So Now, When Opening Application You Just Check Current System Time with Last Run Time Using Simple IF Condition...

Posted 23-Jan-13 0:08am

Ashok19r91d

Comments

[no name] 10-Apr-13 4:52am

Why So Many Capital-Lettered Words?

Ashok19r91d 21-Apr-13 6:21am

It just like your Comment... lol... :-)

[no name] 17-May-13 13:02pm

That Is Why I Did It And Is Also Why I Am Doing It Now, You Silly Goose

URVISH_SUTHAR1 · Answer 4 · 2013-01-23T00:09:00

Solution 4

you can use below option except validation dates

-Give any single day transaction
-Put limitation like user can open your app for 100 times only
-Many more depend upon your app functionality etc...

Might this help :)

Posted 23-Jan-13 0:09am

URVISH_SUTHAR1