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Norman Data Defence Systems Pty Ltd

Gnd Floor 11 Business Park Drive
Notting Hill


BlockIt is a software-only security system for an IBM PC or compatible booting MS-DOS v2.1 or higher. It provides protection through the encryption of the hard drive, with users being required to go through a login process before access to (and decryption of) data on the drive is allowed. Users can be restricted to using only administrator-specified files or directories on the disk, with access to the floppy drives being similarly restricted. Further control of access to applications is provided through a hierarchical menu system.