require the h/w devices

[raviraazk]

how to send messages to administrator or account holder's mobile through bluetooth or any other means when an unauthorised person tries to access any system login or user account or any sort of login form.

[Jonathan Davies]

The first bit's relatively easy, for instance send them an email. But

raviraazk wrote:

any system login or user account or any sort of login form

covers so much I afraid can't help you there.

[Dave Kreskowiak]

Unless all of those systems are rewritten to provide that kind of information, you cannot do what you want. There is no way to monitor every type of system and every window for what "looks like" a login form.

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Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
     2006, 2007, 2008