Takei has long been a local and national advocate of cutting-edge transportation programs. Orr, Stephen Conventional X-ray machines at today's airports are unable to find everything. The system can be used to detect drugs and other illegal contraband, as well as explosives. Analogic's system, the eXaminer 3DX 600, won FAA approval in November and will be tested with selected airlines this spring. The system can scan up to 500 bags per hour, or one every six seconds.
Longer keys are more difficult to decipher and so provide better security.
Such software, including Pretty Good Privacy 5.5i by Network Associates and F-Secure from Data Fellows, protects messages as they travel on the public Internet. These programs operate using two keys, one public that is used to encode the message before it is sent, and one private that is in sole possession of the recipient who uses it to decipher the message. The government restricts the export of encryption products over 56 bits long to certain customers even though such products are widely available abroad. In a recent competition staged by RSA Data Security designed to show the need for longer codes of encryption, competitors cracked a 56-bit code in 39 days. CCTV can now be fully integrated with video, fire, burglary, and access control via the Internet.