The LICENSE4J licensing library is engineered to generate a unique device fingerprint, also referred to as a
device ID, by comprehensively analyzing several key hardware and software components of the host system. This
sophisticated process involves examining data from the Central Processing Unit (CPU), the mainboard,
manufacturer information, details of the hard drive (HDD), partition specifics, and the device's assigned
hostname.
The LICENSE4J licensing library is engineered to accurately detect hardware details and leverage these to
generate a unique device fingerprint. Beyond physical hardware, it also proficiently identifies virtualized
environments and cloud-based systems. This advanced detection capability allows developers to implement specific
licensing policies for these environments, either permitting or restricting software usage based on their
business requirements. This ensures precise control over where and how your software is deployed, whether on
traditional machines, virtual machines, or cloud instances. A comprehensive example is provided at
github repository
This fingerprint serves as a secure and immutable identifier for each device, playing a
crucial role in accurate license management and the prevention of unauthorized software usage. By creating a
distinct digital signature for every system, the library helps ensure that only authorized users have access to
specific software features and functionalities. This method not only significantly enhances security but also
streamlines the entire licensing process, making it more efficient to track and verify legitimate device usage
across various applications.
Furthermore, for specialized hardware configurations or unique software environments that may generate a
different device fingerprint, the library offers exceptional flexibility. Developers have the option to supply a
custom fingerprint during the license validation process. This capability is invaluable in scenarios where the
default fingerprinting method might not align with specific system requirements or constraints, providing
adaptability without compromising security. This ability to use any special value for the fingerprint also
provides seamless flexibility for license activation, allowing you to bind licenses to virtually any unique
identifier relevant to your deployment strategy.
System User Name : demo System Host Name : HPNOTE System Domain Name : hpnote System OS Family : Windows System Java Name : Eclipse Adoptium OpenJDK 64-Bit Server VM 21.0.5 System CPU Core Count : 8 System is Virtual : false System is Cloud : false System is Container : false Hypervisor Name : null Cloud Provider Name : null USB Name : Kingston DT 101 II USB Device USB Vendor Id : 0951 USB Product Id : 1625 USB Serial Number : 001CC0EC3466AA2197EA19F3 USB Mount Path : F:\
System User Name : demo System Host Name : DESKTOP-DFU23TJ System Domain Name : DESKTOP-DFU23TJ System OS Family : Windows System Java Name : Eclipse Adoptium OpenJDK 64-Bit Server VM 21.0.5 System CPU Core Count : 4 System is Virtual : true System is Cloud : false System is Container : false Hypervisor Name : Microsoft Hyper-V Cloud Provider Name : null USB Name : null USB Vendor Id : null USB Product Id : null USB Serial Number : null USB Mount Path : null
System User Name : ubuntu System Host Name : ip-172-31-12-125 System Domain Name : ip-172-31-12-125.eu-central-1.compute.internal System OS Family : Ubuntu System Java Name : Ubuntu OpenJDK 64-Bit Server VM 17.0.14 System CPU Core Count : 1 System is Virtual : true System is Cloud : true System is Container : false Hypervisor Name : Xen HVM Cloud Provider Name : Amazon EC2 USB Name : null USB Vendor Id : null USB Product Id : null USB Serial Number : null USB Mount Path : null
System User Name : demo System Host Name : ahost.company.com System Domain Name : localhost System OS Family : AlmaLinux System Java Name : Eclipse Adoptium OpenJDK 64-Bit Server VM 21.0.6 System CPU Core Count : 4 System is Virtual : true System is Cloud : false System is Container : false Hypervisor Name : KVM Cloud Provider Name : null USB Name : null USB Vendor Id : null USB Product Id : null USB Serial Number : null USB Mount Path : null