JAVA application to read USB scanner barcode - Windows 10

I will order to write an application for Windows 10 to read the barcode in the background of Windows 10 work.

The application (it runs in the background and is visible in TRAY) is supposed to capture the read barcode regardless of what the user is currently using (mail, www, YouTube or wykop.pl ) - and when the barcode is read - the application should trigger an https request along with the read code, e.g.: http://domena.pl/?barcode=012345678&key=secrethash

Secrethash is a protection against possible bot or other unknown situation. Secrethash is defined in the application settings. Also we define in the settings the domain address. Endpoint is a PHP script that further processes the received barcode.

We also define the application license key in the settings. The key will also be retrieved by a request - if the request receives a correct answer (defined hash) - the application should start - if not - it should ask for the correct key until the end.