Abstract: A disc cartridge and corresponding method/system are provided for limiting the number of copies which may be made of software stored on a magnetic disc. A magnetic field generating member is provided within a magnetic disc cartridge, or embedded within a magneto-optical or magnetic disc, so that after copying of the software from the first disc to a second disc, the magnet is energized so as to create an erasing magnetic or electromagnetic field proximate the first disc in order to erase the copied software therefrom, while an anti-copy signal is copied or otherwise sent along with the software from the first disc to the second disc so as to prevent later copying of the software from the second disc. According to certain other embodiments of this invention, a method/system is provided for erasing software from a disc using the above-discussed cartridge after a user attempting to copy the software enters an incorrect password a predetermined number of consecutive times.

Abstract: A system and method for reducing the risk of cellular phone loss, misplacement, and/or theft, the system including a wireless transmitter in a cell phone for intermittently sending security signals to a device (e.g. pager) to be worn by a user. The device includes an alarm which is actuated when either the strength or amplitude of the security signal(s) falls below a predetermined threshold or when such security signals are not received by the device (e.g. pager) for a predetermined period of time. Accordingly, the user is alerted to potential loss, misplacement, and/or theft of the cell phone.

Abstract: A disc cartridge and corresponding method/system are provided for limiting the number of copies which may be made of software stored on a magnetic disc. According to certain embodiments, only a single copy of the software may be made from the disc, after which the software is erased from the disc by way of an erasing magnetic field. A magnet is provided on or within the disc cartridge so that after copying of the software from the first disc to a second disc, the magnet is energized so as to create an erasing magnetic or electromagnetic field proximate the first disc in order to erase the copied software therefrom, while an anti-copy signal is copied or otherwise sent along with the software from the first disc to the second disc so as to prevent later copying of the software from the second disc.