anti-theft containers for displaying products to the public; security containers for securing a surveillance tag to cassettes, compact discs, CD ROMs, video cassettes or game cartridges; lockable frames for releasably locking a surveillance tag to products, namely cassettes, compact discs, CD ROMs, video cassettes or game cartridges; keeper devices for keeping a surveillance tag securely fixed to merchandise; keeper devices having a locking mechanism for securing a surveillance device to cass...