Augmented Reality - Virtual Reality that's Real Today

This is not virtual reality which is 100% simulated environment and characters. But it's close and more useful in the real world. If you've watched any of Arnold Schwarzenegger's Terminator movies where they show what the terminator sees from his perspective (displaying data while looking at a person or object) that's the general idea of what AR is.

As you look at a building or object through a sensitized pair of goggles, you get real time information related to what you are looking at. It could be a street or a landmark and your goggle displays information about it and your location using GPS navigation. Or you could look at an artifact in a museum and get information readout on your goggles.

Changing the Way We Look at Things and People

AR straddles somewhere between the immersive computer-generated graphics that have high realism on one end of the spectrum and the real world at the other end. Superimposing graphics, images and information as needed over real images we see through cameras constitutes Augmented Reality. Just like Virtual Reality, you need a pair of Goggles or heads-up display screens in a helmet that are transparent enough for you to see normally through them.

But the glass surface is actually an LCD screen that can display information depending on what you are looking at. You could be looking at a person and your goggle shows you some information about the person taken from a social networking site or remote database. CIA and FBI operatives would love this. You could look at a landmark and you get information about it and your exact location from GPS data. Tourists would be delighted with this. You could look at a car and the goggle display technical data about it. Car aficionados and prospective buyers would like that as well.

Games and More Games

Video games have been with us for almost 40 years now and they've grown to be sophisticated right down to your portable mobile gaming handsets and mobile phones. There are already games using AR technology in mobile phones with even the most rudimentary imaging system or camera. Set the camera against a table and you see characters walking or battling it out on the table from your screen. Some use printed surfaces in books which the AR application on your handset can detect and display images accordingly. This gaming technique saves the application some computing time to render 2D polygons for backgrounds and thus minimize file sizes.

Military Application

The military already has projects in AR. The concept is about providing troops with instant information about their target surroundings in real time. This includes displaying on their goggles exact enemy locations that would otherwise be hidden from view without it. It can show egress points when entering structures, something like an X-ray vision or night vision. AR can assist them to skirt through mines and booby trapped locations.

What is Needed

Goggles that display the information superimposed on what you see through them as well as mobile phone screens set in camera mode are prerequisites to the AR technology. The intelligence could be in the mobile phone or a belt-strapped device that can communicate with remote databases through WiFi. The goggles can eventually evolve into simple eyeglasses. AR is still in its infancy but the promise is there alright. GP
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Wireless Network: A Reflection of Latest Trend

The power of communication amongst computers is equally important as that of power of computers to process data, and by the impact of these powers information age has been revolutionized.

The power of communication amongst computers is equally important as that of power of computers to process data, and by the impact of these powers information age has been revolutionized. This communication is responsible for the proliferation of computer networks.

Few major objectives of a computer network are information sharing, resources sharing (both software and hardware) and sharing of processing load.

Wireless communication falls under category of recent trends in the computer and communication industries. The radio waves in a wireless network are used instead of cables, and thus enhance the functionality of computing devices. Laptop users are much helped with wireless networking, since it is of great use to them while moving from one location to the other throughout the day.

Fixed wireless systems and mobile wireless systems are classifications of Wireless networks, where a little or no mobility of the equipment related to the wireless network is supported by a fixed wireless system.

A local area network can be configured by use of wireless network for getting rid of the headache of laying cables. The mobility of the equipment is supported by mobile wireless systems that enable the user to access information from anywhere and at any time. The personal digital assistants (PDAs), smart phones and pager with Internet access are few of multiple equipments used in the mobile wireless systems.

The radio waves or pulsing infrared lights are modulated to communicate wireless networks. The stationary transceivers are the intermediates to link wireless networking router to the wired network infrastructure.

Analog cellular, digital cellular, mobile radio networks, Cellular Digital Packet Data (CDPD), satellite, microwave systems, personal communication services (PCS) and local multipoint distribution systems (LMDS) are Wireless communication technologies utilized in wireless networks.

The wide availability of modems and analog cellular services makes analog cellular technology the most popular methods for wireless data communications, although the data rates supported by analog cellular technology are low.

2G and 3G technologies, wireless LANs, Wireless Local Loops (WLLs), radio-router technology, multi-loop wireless network and Wireless Application Protocol (WAP) are few from the list of most commonly used wireless technologies.

Further elaboration to wireless network depends on their features and uses, they are:

Wireless PAN: Expanded as wireless personal area network; popularly known as a personal area network because a small geographical area is covered by it. Bluetooth is one such example of the WPAN, since connectivity of Bluetooth is limited only to an area of 10mts and thus proving to be a wireless personal area connectivity provider.

Wireless LAN: Expanded as wireless local area network supporting local area connectivity and covering a larger area than PAN.

Wireless MAN: Expanded as Wireless metropolitan area network and is spread in a metropolitan area covering a wider area than when compared to PAN and LAN.

Wireless WAN: Expanded as wireless wide area network and thus a covers a wide area. The nodes are connected perfectly with one another in wireless wide area network.

Mobile networks: The development of mobile smart phones initiates this network, which is to hold computer data with transferring abilities along with talking.
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Shopping Online With Paypal In The Uk Has Never Been Easier!

Everyone and their mother is doing it - shopping online that is, yet a lot of us are yet to really take advantage that online shopping can give you. Surveys show that most Brits have shopped online and most have used Paypal as their payment processor, yet most purchases are limited to a few big sites such as Ebay or Amazon. That's all very good, but there are actually very compelling reasons why you should skip the drive to the mall and buy from an online store instead.
Product Selection
Ever spent hours in a mall looking for exactly the right model of something? You really want it in white but the shop only has it in red. That's a very annoying scenario that I think we have all tried at one point. One of the major benefits of doing your shopping online is the vast selection of products. There really is no comparison. Whatever you are looking for you can find it online. Some things you can only find online, like some foreign products that you can't find in local shops or would at least have to drive a long way to find.

Safety
Internet shopping is actually very safe, even safer than shopping offline. Online shopping had bad reputation years ago, but today there is no greater risk by shopping online. In fact, recent studies show that you are far more likely to get scammed offline than online. When you shop with a reputable payment processor such as Paypal and use a credit card, you have the option of reversing your payment, should you not receive what you paid for. When shopping online, look for the Paypal logo to be sure your purchase is safe.

Big Discounts
If you want the really big discounts and good deals, then you have to shop online. Most companies with a webshop have the option for customers to use a coupon code for discounts and promotions. They don't go around advertising this though, but there are several UK price comparison sites that do the job for you. There are also directories that allow companies to put their special offers in there.
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How Firewalls Work

At their most basic, firewalls work like a filter between your computer/network and the Internet. You can program what you want to get out and what you want to get in. Everything else is not allowed. There are several different methods firewalls use to filter out information, and some are used in combination. These methods work at different layers of a network, which determines how specific the filtering options can be.

Firewalls can be used in a number of ways to add security to your home or business. Large corporations often have very complex firewalls in place to protect their extensive networks. On the outbound side, firewalls can be configured to prevent employees from sending certain types of emails or transmitting sensitive data outside of the network. On the inbound side, firewalls can be programmed to prevent access to certain websites (like social networking sites). Additionally, firewalls can prevent outside computers from accessing computers inside the network. A company might choose to designate a single computer on the network for file sharing and all other computers could be restricted. There is no limit to the variety of configurations that are possible when using firewalls. Extensive configurations typically need to be handle and maintained by highly trained IT specialists, however.

For home use, firewalls work much more simply. The main goal of a personal firewall is to protect your personal computer and private network from malicious mischief. Malware, malicious software, is the primary threat to your home computer. Viruses are often the first type of malware that comes to mind. A virus can be transmitted to your computer through email or over the Internet and can quickly cause a lot of damage to your files. Other malware includes Trojan horse programs and spyware. These programs are usually designed to acquire your personal information for the purposes of identity theft of some kind. There are two ways a firewall can prevent this from happening. It can allow all traffic to pass through except data that meets a predetermined set of criteria, or it can prohibit all traffic unless it meets a predetermined set of criteria.

Comodo Firewall Pro uses the latter way to prevent malware from installing on your computer. This Free Firewall Software, from a leading global security solutions provider and certification authority, use the patent pending