Wavelength - The distance traveled in one cycle in meters, centimeters, etc.
Frequency - The number of cycles repeated during a unit of time (usually 1 second) is the frequency, usually expressed as hertz (cycles per second).
Wavelength and frequency are inversely proportional.
As frequency increases, potential data throughput increases, but signal propagation decreases. Typically 2 Ghz and up are used for data apps.
Amplitude – Maximum displacement of the wave from zero
Phase - The phase of a wave is the amount by which the cycle has progressed from a specified origin, usually expressed in degrees of a circle, and relative to that of some other wave. For example, two waves having crests 1/4 cycle apart are said to be 90° “out of phase.”
Range & Throughput - Cellular ~16 mi 0.94 1.89 GSM EDGE Evolution 0.034 ~16 mi 0.47 0.47 GSM EDGE type 2 0.014 ~16 mi 0.04 0.09 GSM GPRS Class 10 ~18 mi 1.8 4.9 CDMA EV-DO Rev. B ~18 mi 1.8 3.1 CDMA EV-DO Rev. A 0.75 ~18 mi 0.15 2.5 CDMA EV-DO Rev. 0 0.125 ~18 mi 0.15 0.31 CDMA RTT 1x Typical Download Mbps Range Max Upload Mbps Max Download Mbps Standard
Range & Throughput - WiFi 40 ~50 meters 200 200 WiFi: 802.11n 10 ~30 meters 54 54 WiFi: 802.11g 2 ~30 meters 11 11 WiFi: 802.11b 54 54 WiFi: 802.11a Typical Download Mbps Range Max Upload Mbps Max Download Mbps Standard
Range & Throughput - Bluetooth 375 3 Bluetooth 2.0+EDR Class 1 - 100mW – 100 meters Class 2 – 2.5mW – 10 meters Class 3 – 1mW – 1 meter 125 1 Bluetooth 1.1 Range Max Uplink Kbps Max Downlink Mbps Standard
Radio Waves and Safety What Are the Risks? “ It was found that users who spend more than an hour a day talking on a mobile phone have a close to one-third higher risk of developing a rare form of brain tumor. Most frequently, the cancers were found on the side of the head that the user held the phone up to. ” International Journal of Oncology, February 2003;22(2):399-407 "There is currently insufficient scientific basis for concluding either that wireless communication technologies are safe or that they pose a risk to millions of users.... FCC radio frequency radiation guidelines are based on protection from acute injury from thermal effects of RFR exposure and may not be protective against any non-thermal effects of chronic exposures." U.S. Food and Drug Administration, February 2000 NYSTEC has been studying this issue with the US Air Force at Rome Labs
Radio Waves and Safety What Are the Risks? Subject before testing
Radio Waves and Safety What Are the Risks? NYSTEC TOP SECRET Subject after testing Effect was not permanent
Windows laptop security programs may not run “as-is” on stripped down Windows Mobile 5.0 for Pocket PC and Windows Mobile 6 Classic
Wireless creates new data network attack opportunities…
Many PDAs and Smartphones have 3+ wireless services (cellular, Wi-Fi, Bluetooth)
The default security mechanisms in mobile devices are turned off (for ease of use)
Many users use these devices without the knowledge of IT Departments
Forward email and/or store calendar information (synch with PC using products like BitPIM)
Use as an external storage device
http://www.flexispy.com (“Download FlexiSPY spyphone software directly onto a mobile phone and receive copies of SMS, Call Logs, Emails, Locations and listen to conversations within minutes of purchase” )
Theft of organizational data off the device. This can lead to non-compliance issues-- HIPAA, State Disclosure Laws (for example, NYS Information and Security Breach Notification Act, CSCIC Policies, Federal Policies )
Theft of data when the device is transmitting/ receiving data
Loss of organizational data off the device. Think of the cost (i.e., amount of time it would take to replace the data) if the data is lost or corrupted. This data includes phone book and calendar information.