Overview

Every purchase of a licensed product issues a licence key bound to the purchasing account.

• A licence belongs to one customer and one product.
• An activation binds a licence to one installation, identified by a fingerprint you compute.
• A licence event records every issue, activation, deactivation, suspension and revocation.

The fingerprint is supplied by your software and should be stable across restarts and resilient to a change of address. A hash of the machine identifier combined with the installation directory is a reasonable default.

IP address alone is never an acceptable fingerprint: customers behind dynamic addressing would exhaust their activation limit within days.