For example, advanced coding (Cacciamani, 1970, 1971, 1973) has been used in commercial satellite communications since the early 1970s for both data and highly compressed digital imaging, enabling the use of antennas on the order of 18 inches in diameter for digitally compressed video signals with link BERs less than 10-9. The best known of these technologies is probably CDMA, which has been widely adopted for cellular and personal communications systems worldwide. Encryption, along with data mining and RF fingerprinting, is increasingly being used to protect against fraudulent use in cellular systems, video entertainment subscription receivers, and business data. Finally, on-board digital processing will be used in the planned mobile telecommunications satellite and high-speed data satellites such as Teledesic.