Ajax (Asynchronous JavaScript and XML) is a new paradigm which was introduced in 2005. The purpose of Ajax is that of giving the illusion that websites are responsive. It achieves this by processing requests which involve the sending and receiving of small packets of data without refreshing the web browser. Ajax is founded on:

• XHTML - A rigid subset of html which is used to mark-up and style the information.
• DOM - The Document Object Model which can be accessed by the client browsers.
• XMLHttpRequest - The object used to exchange the information asynchronously.
• XML - The format used to transfer the data from the server to the client.

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One of the reasons why Windows Mobile devices have such a market advantage in software development is the vast knowledgebase that programmers have access to and the powerful and easy-to-use development tools available for them (such as Microsoft Visual Studio & Microsoft Embedded C++). Symbian development has always been restricted to a narraw range of professional or enthusiast programmers who do not mind programming at a reasonably low level (usually C++). This is mostly due to the fact that setting up a development suite for such a platform and developing applications for this platform requires quite a bit of expertise and most developers give up very early on.

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Traditional phone systems are susceptible to a number of attacks. Such attacks more often than not involve the use of specialised equipment that can tap into the phone lines. The more common of these being cutting into the phone lines using clippers, evesdropping on the other side of the switch, or using a radio receiver tuned to the right frequency to pick the ongoing microwaves or finally you can evesdrop at the microwave or satellite phone links.

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