Bluetooth Personal Wireless

Bluejacking ... Bluetooth has a very limited range, usually around 10 metres (32.8 ft) on mobile phones, but laptops can reach up to 100 metres (328 ft) with powerful (Class 1) transmitters... He also invented the name, which purports to be an amalgam of Bluetooth and ajack, his username on Esato, a Sony Ericsson fan online forum... With the increase in the availability of Bluetooth enabled devices, it is often reported that devices have become vulnerable to virus attacks and even complete take over of devices through a trojan horse program although most of these reports are easily debunked...

Bluetooth Stack ... Bluetooth stacks can be roughly divided into two: General-purpose implementations that are written with emphasis on feature-richness and flexibility, usually for desktop computers... Embedded system implementations intended for use in devices where resources are limited and demands are lower, such as Bluetooth peripheral devices... General-purpose implementations Windows Widcomm Widcomm was the first Bluetooth stack for the Windows operating system...

Bluetooth Protocols ... The controller stack is generally implemented in a low cost silicon device containing the bluetooth radio and a microprocessor... For integrated devices such as bluetooth headsets, the host stack and controller stack can be run on the same microprocessor to reduce mass production costs; this is known as a hostless system...

Mobile Phone Radiation And Health ... The WHO has classified mobile phone radiation on the IARC scale into Group 2B - possibly carcinogenic. That means that there "could be some risk" of carcinogenicity, so additional research into the long-term, heavy use of mobile phones needs to be conducted...

Bluetooth ... Bluetooth is managed by the Bluetooth Special Interest Group, which has more than 15,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. The SIG oversees the development of the specification, manages the qualification program, and protects the trademarks...

Wireless Electronic Devices And Health ... International guidelines on exposure levels to microwave frequency EMFs such as ICNIRP limit the power levels of wireless devices and it is uncommon for wireless devices to exceed the guidelines... Exposure difference to mobile phones Users of wireless devices are typically exposed for much longer periods than for mobile phones and the strength of wireless devices is not significantly less... Whereas a mobile phone can range from 21 dBm (125 mW) for Power Class 4 to 33 dBm (2W) for Power class 1, a wireless router can range from a typical 15 dBm (30 mW) strength to 27 dBm (500 mW) on the high end...

Wireless ... Some cordless devices, such as cordless telephones, are also wireless in the sense that information is transferred from the cordless telephone to the telephone's base unit via some type of wireless communications link... History Photophone The world's first wireless telephone conversation occurred in 1880, when Alexander Graham Bell and Charles Sumner Tainter invented and patented the photophone, a telephone that conducted audio conversations wirelessly over modulated light beams (which are narrow projections of electromagnetic waves)... In the history of wireless technology, the demonstration of the theory of electromagnetic waves by Heinrich Hertz in 1888 was important...

Bluetooth Profile ... For example, music can be streamed from a mobile phone, to a wireless headset, hearing aid & cochlear implant streamer, or car audio or from a laptop/desktop to a wireless headset...