Product Key La Gi -

Các phần mềm diệt virus như McAfee cũng sử dụng cơ chế quản lý đăng ký (subscriptions) tương tự thông qua tài khoản cá nhân.

Product keys are gradually being replaced or supplemented by:

| Type | Description | Example Use Case | |--------------------------|-----------------------------------------------------------------------------|----------------------------------------| | | Can only activate one device permanently. | Retail Windows, many games | | Multi‑use (Volume) | One key activates a predefined number of machines (e.g., 50, 500). | Schools, large businesses | | Trial key | Limited validity (e.g., 30 days) with reduced features. | Software evaluation | | Subscription key | Tied to a recurring payment; deactivates if payment stops. | Microsoft 365, Adobe Creative Cloud | | OEM key | Pre‑installed by a computer manufacturer; locked to that hardware. | Laptops and prebuilt desktops |