In order to install the app on the camera, the customer must first purchase a certain number of apps from the Azena Application Store. The purchased app can only be installed on an Azena OS-powered device with an associated license. Azena Device Management Portal will create the license when the customer triggers the installation. It will get assigned to a unique Device ID (burned into the device by the manufacturer and can't be changed). A buyer can only generate as many licenses as they purchased.
Please note: In the instance of subscriptions (annually renewing), the purchase date is the key, not when a license has been installed.