IPHONE

iphone

The iPhone is a line of Internet and multimedia enabled smart phones designed and marketed by Apple Inc. The first iPhone was introduced on January 9, 2007. iPhone functions as a camera phone including text messaging and visual voicemail a portable media player, and an Internet  Client, with e-mail, web browsing, and Wi-Fi connectivity. The user interface is built around the device’s multi-touch screen, including a virtual keyboard rather than a physical one. Third-party applications have diverse functionalities, including games, reference, GPS navigation, social networking, and advertising for television shows, films, and celebrities.

There are four generations of iPhone models; the iPhone 4 has two cameras for Face Time video calling and a higher-resolution display. It was released on June 24, 2010.

Screen and input

The touch screen is a 9 cm (3.5 in) liquid crystal display with scratch-resistant glass. The capacitive touch screen is designed for a bare finger, or multiple fingers for multi touch sensing. IPhone 4 has a resolution of 640 x 960 at 326 ppi.

Audio and output

One of two speakers left and the microphone at right surround the dock connector on the base of the original iPhone. The built-in Bluetooth supports wireless earpieces and headphones.

Battery

The iPhone features an internal rechargeable. The battery is not user replaceable. The iPhone can be charged when connected to a computer for syncing across the included USB to dock connector cable. If the battery malfunctions or dies prematurely,

Camera

The iPhone 3GS has a 3.2 mega pixel camera It is also capable of capturing 640×480 (VGA resolution) video at 30 frames per second, although compared to higher-end CCD based video cameras it does exhibit the rolling shutter effect. The video can then be cropped on the device itself and directly uploaded to YouTube, MobileMe, or other services.

The iPhone 4 introduced a 5.0 mega pixel camera, also located on the back, which is equipped with a backside illuminated sensor capable of capturing pictures in low-light conditions, as well as an LED flash capable of staying lit for video recording at 720p resolution, considered high-definition. In addition the iPhone 4 has a second camera on the front capable of VGA photos and SD video recording.

Wi-Fi

Internet access is available when the iPhone is connected to a local area Wi-Fi or a wide area GSM or EDGE network, by default, the iPhone will ask to join newly discovered Wi-Fi networks and prompt for the password when required. Alternatively, it can join closed Wi-Fi networks manually.

The iPhone 3GS has a maximum download rate of 7.2 Mbit/s.

Safari is the iPhone’s native web browser, and it displays pages similar to its Mac and Windows counterparts. Web pages may be viewed in portrait or landscape mode and supports automatic zooming by pinching together or spreading apart fingertips on the screen, or by double-tapping text or images the iPhone supports SVG, CSS, HTML Canvas, and Bonjour.

Apple also developed a separate application to view YouTube videos on the iPhone, which streams videos after encoding them using the H.264 codec. Simple weather and stock quotes applications also tap in to the Internet.

E-mail and text messages

The iPhone also features an e-mail program that supports HTML e-mail, which enables the user to embed photos in an e-mail message. PDF, Word, Excel, and PowerPoint attachments to mail messages can be viewed on the phone. Yahoo! offers a free push-email service for the iPhone.

The Reality of a Wireless Network

The wireless network is an electronic & internet network which is found almost everywhere these days, for example; offices, schools and even our own homes. Wireless network are easy to setup but the equipment is quite expensive. Still, Many schools have installed wireless networks in their schoolrooms and even every student that has a compatible PC can finish their homework or even play on-line games.

Even in every business, which is filled with different styles of sections and computer usage are using internet technology to bridge communication between all the carious sections so as to share the data & resources.

Earlier internet technology was possible only with the cables but the way of using internet forever changed with the development of wireless technology. Wireless technology have made it possible to use the internet anywhere in home, while watching television & even can carryit in garden. There are pros & cons of using wireless internet technology in home & office.       Because the entire premise of wireless network communication is totally based on the principal that data is being freely transferred across airwaves, while most of us are fully aware of this danger, but the fact is that there are still many wireless network users who are unaware of wireless security and simply leave their networks wide open. Fortunately, many options exist for securing our wireless networks for those users who choose to do so.

With an open and unprotected wireless network, anyone in the range of your wireless router can freely connect and use your wireless internet connection to do spamming or malicious activities. Therefore every wireless router has to be set with encrypted 8/16/32 bit key. so that Your internet connection should not become a mercy to anyone who chooses to use it for immoral or any illegal activity. Wireless technology has reached to its peak by embedding in latest mobile phones. Every new model of every brand comes with wi-fi technology. which made every one to be connected with both the mobile & internet network. Their are various cafes & shopping malls provide free access to their wireless network so as to attract customers.

Article by: Sameer – Seo Consultant

Biometric Technology

Biometric is a science and technology of authentication. In fact biometric technology is not new technology.  Biometric technology is already used since ancient Egyptian times.

Biotechnology is used to identify the persons recording size of recognizable body parts; it is normally used to ensure that the person is the truly him / her.

Basically Biometric system was used in security purpose and also used in networking system Logically, no one has access without being trusted. Access control technology tries to automate the process of answering two basic questions before offering various types of access.

Where the first question is who are you? And the second question is “Are you really as you say?” The first question represents the function of identification and the second question represents the function of verification. Where is the biometric technology first process?

This common approach is to gain access through the use of signs and assumptions that the owner of the sign and the proof identity will match. That kind model is called as single factor security. This technology is mostly used in house keyword system. This technology is also used for the identification purpose. This type of approach has a risk if the sign is lost or stolen. Once any one enters with the key of another person, they could easily enter the house. This also happens with password. It will not be a secret some one else can use it.

To over come this problem go for two factors security is find. This method is most cost and risks. The most common example of automated teller machine (ATM). With a card that shows who you are and PIN which is the mark you as the rightful owner of the card, you can access your bank account. The weakness of this security is that both signs should be at the requester of access. Thus, the card only or PIN only will not work Problems arise when you are forgetful person. Also, you often do not realize that the PIN is very personal thing. Basically, family or close friends may not know. The more sophisticated crime is to steal the PIN data from the source directly.

In this situation, biometric fingerprint scanner can be a solution. , it is pretty exotic technology in the real world. It was basically used in police stations, high security buildings and even on PC keyboards purpose. Using biometric technology you can identify the persons and cards and system.

There is no better way of identifying an individual than using his or her own unique characteristics. Today, with the ever increasing awareness of privacy and data protection, biometrics technology is the safest and the most convenient way in identification which improves individual identification all across the board. Biometrics has now commercial consciousness as laptops, mobiles phones, computers, and other home appliances can now be engaged using this amazing technology.

There are two categories of biometrics technology being used today. One is physiological biometrics which measures characteristics that can be empirically identified such as the face, fingerprint, hand, and iris. Another category is labeled as behavioral which includes signature, voice, and keystroke. As with any type of technology, each of this items under these two categories has its own advantages and disadvantages. Let us get an overview of how each of them works.

Fingerprint Identification

Each person develops his or her unique fingerprint while still in the womb. No one can match her he and finger prints own brothers and sister. The ridges and valleys for each individual are unique. Today there are four sensor designs to conveniently identify a person–ultrasonic, optical, active capacitance, and passive capacitance. Using biometric technology we can identified.

Iris recognition

IRIS is the one of the most commonly used technology, in this recognition this can be used for more security purpose. One of the most accurate means of identifying an individual, iris recognition is a recent development in identification procedures in many countries.  This are mainly recently used in card verification purpose. Due to its unique characteristics such as its flatness, the iris of the individual can be accurately measured since each diameter is consistent in each eye. We can calculate retina iris we can find out them. As with fingerprints, the fine texture and unique patterns can be easily measured.

Facial recognition

Facial recognition is most commonly used technique. Where in the Facial recognition mainly 5 steps are available. First capture the image and after you can store in the data base.  utilizes standard photographic techniques to record a human face. A seasoned photograph operator can measure the distances between the characteristics in the face such as center of the pupils, the outside corner of eyes, pattern of the hairline, the inside metric from the corners of the eyes, and other common facial recognition techniques used in our everyday life. To aid in a more objective process, there are specialized software that can automatically identify or verify a person from a digital image or even a video frame.

Signature

This technique in identification is fast turning into obsolescence due to fast advances in scanning technologies at present. A good case in point is the ability of any individual men to “sign” documents electronically by using their stored “true type” fonts.

voice recognition

Although this technology has been around for forty years, voice recognition is still a very reliable means to identify individuals by using acoustic features unique to the speaker. Its non-invasive and non-intrusive characteristics make it an ideal person filter.

These techniques in identification have proven their worth as the years passed. While some of them may not make it to Technology news anymore, each of them is still effective if used properly and in conjunction with other techniques. Many institutions are now employing a set of biometric identification techniques. It is not also surprising that in the near future, even a flash drive will feature a biometrics to safeguard even the most mundane of data it holds.

   Bluetooth Technology

Bluetooth is a wireless technology. Bluetooth is a short range communications technology from fixed mobile devices, creating personal area networks (PANs) with high levels of security. The features of Bluetooth technology low power and low cost. Created by telecoms vendor Ericsson in 1994, it was really conceived as a wireless alternative to RS-232 data cables. Today Bluetooth is managed by the Bluetooth Special Interest.

The structure and the global acceptance of Bluetooth technology means any Bluetooth enabled device, almost everywhere in the world, can connect to other Bluetooth enabled devices located in proximity to one another.
A fundamental capacity of Bluetooth wireless technology is capability to simultaneously transmissions of voice and data. which provides users with a variety of innovative solutions such as hands-free headsets for voice calls, printing and fax capabilities, and synchronization for PCs and mobile phones, just to name a few.

BlueTooth Data Transfer Range

Range may vary depending on class of radio used in an implementation:

• Class 3 radios – have a range of up to 1 meter or 3 feet
• Class 2 radios – most commonly found in mobile devices – have a range of 10 meters or 33 feet
• Class 1 radios – used primarily in industrial use cases – have a range of 100 meters or 300 feet.
Bluetooth application
• Wireless control of and communication between a mobile phone and a hands-free handset. Bluetooth was one of the earliest applications to become popular.
• Wireless networking between PCs in a confined space and where little bandwidth is required.
• Transfer of files, contact details, calendar appointments, and reminder between devices with OBEX.
• Wireless communication has PC input and output devices, the most common thing are mouse, keyboard and printer.
• For low band width applications where higher USB band width is not required
• Wireless bridge between two Industrial Ethernet
• Bluetooth technology is a first wireless technology transfer the data between the two devices like handsets.

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