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After the arrival of 3g phones in India there is stiff competition among mobile phone companies. Cell phones from many vendors are in great demand in India. Popular brands include not only Nokia but even motorola mobile phones in india are great success. Nowadays you will find all the features of a laptop built inside mobile phones. Cost of mobile phone has reduced in past many years and will show more depreciation in coming months due to ergonomic and technological growth. Price of laptop has also reduced. Moreover, new and more exciting features are now available with every laptop brands. Compaq Pressario and HP laptops are already a hit in India. Dell has also earned a good brand value. One thing is for sure that when you will go to purchase a cell phone or a laptop you will get very confused about which brand to choose. We always want to buy the best within our budget, so we wander from one store to another searching for more brands and discount prices. If it is the case with you then let me suggest you the easiest way to purchase mobile phones, laptops, LCD TVs etc. Don’t waste your time and energy searching stores; rather visit ConsumerMate.com, a venture by 9.9 Media. 9.9 Media is an founded by highly educated techies from IITs and other reputed colleges.

At this online store you will be able to search your favorite brand just on few mouse clicks as all the products are categorized accordingly. They provide features for Laptop Comparison India. If you are looking for laptop or mobile phone then you just need to select the brands you prefer. Check the type of product, say slider for mobile phones and suggest your price range. You can also see the products in New Launches and Hot Deals section. Nonetheless, you can now submit your request to Consumermate.com in their Ask Us Section for any specific model. As a result you would be contacted by at least 2 to 3 vendors in your city with the best price offers for the products selected or mentioned in the message. This will help to get the best prices and deals from different vendors. The website is very user friendly and online transaction is secure. I am impressed by the services offered by the website. If you have any shopping experience to share about this online store please post it here via comments so that it would help our readers.

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IMEI stands for International Mobile Equipment Identity. It is a unique built in ID through which your cellphone can be identified and its whereabouts can be traced. It is associated with each cellphone during manufacturing process. Importance of IMEI numbers can be understood by the fact that if your cellphone gets snatched or stolen you can trace your cellphone using IMEI number. If you are unable to get back your cellphone then at least you can take help from police to blacklist that IMEI number so that it can not be used by anyone. Cellphones without IMEI number is a major threat to the security of any nation. Such cellphones can not be traced and terrorists can use it for malicious purpose. Most of the cheap Chinese cellphones in the market do not have IMEI numbers. Some of them use the duplicate IMEI numbers too.

Have you ever wondered that how your IMEI number gets traced and how the blacklisted IMEI numbers gets blocked? IMEI numbers of all the mobile terminals are stored in the database known as EIR i.e. Equipment Identity Register. EIR stores three different lists of IMEI numbers – A white list, A Black list and A Grey List. White list consists of all the IMEI numbers who are allowed to access the network. Black list consists of the list of those numbers which are blocked. These are usually stolen terminals whose service have been barred. Grey list consists of faulty or non-approved equipment. These equipments are under monitor.

Recently I India put a ban on cellphones without IMEI number. If you had purchased cheap Chinese cellphone and you want to continue with your same cellphone then all you have to do is to immediately apply for unique IMEI number. It is possible to use your cellphone. You need to approach to ICA i.e. Indian Cellular Association for unique IMEI number. They embedded a new IMEI number into your cellphone. So you can continue using your same cellphone.

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Virus is again in news for the damages it cause due to its unrestrained spread. This time it is not only the biological virus H1N1, but also the computer virus. The two virus namely Conflicer and W32 Nimda infected the servers which was being used for conducting CAT exam, entrance test for IIMs. Basically these are worms which mostly come either from USb drives or the internet. Needless to mention that they affect MS Windows operating system. If you search about these worms in Wikipedia you will find that Conficker exploits the flaw in Windows to take over machines and link them into a virtual computer that can be commanded remotely by some other person or program. You will be amazed to hear that there are nearly seven million computers now under its control—government, business and home computers in more than 200 countries.

Even W32 Nimda is known for its highly propagative nature. The most astonishing part is that Windows has already released patches against these worm but Prometric, the US based firm responsible for all the technical aspects of the online test, perhaps did not take it into their consideration.

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Every company, specially in IT/Software company heavily relies on Security Token with one time password feature. Wherever security and privacy is an issue security tokens are used. Security token is nothing but a very small crytographic device which you can carry inside your pocket. It is like an electronic key to access private or confidential data. Some of these devices are like you credit cards or ATM cards with cryptographic keys like digital signature and biometric such as fingerprint minutiae. However some more advanced tokens may include small size key board on it which can be used to enter the PIN and generated the password to access the system. Some devices even come with USB, Bluetooth or RFID functions.Generally tokens come in four varieties. Some uses static password and some device uses synchronous Dynamic Password. There are devices which uses asynchronous password as well as challenge response.

These devices are not very simple as they make use of compex cryptographic algorithms. Moreover the password generated by these device are for only one time usage. That is why they are often called One Time Password or OTP. OTP algorithms uses different approaches to generate the random passwords:

One approach is to use a mathematical algorithm to generate a new password based on the previous password. So the generated passwords follows the chain and are used in predefined sequence.

Another effective approach is based on time-synchronization between the authentication server and the client providing the password. In this approach the passwords are valid for only short duration of time, say 3 minutes. Moreover, it is impossible to guess the next password even if you know know the current password.

One more approach is to use mathematical algorithm where the new password is based on a challenge.

I studied about various cryptographic techniques and algorithm during my engineering and was always curious to know more about it. Practically using these devices and understanding their importance is a wonderful experience for me. RSA and other cryptographic algorithms are highly used in web environment for authentication and secure trancations (like in htpps urls). OTP is yet another wonderful application of cryptography.

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