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Archive for the ‘technology’ Category

Captchas are challenge-response tests used to ensure that the user is a human (and not a robot). I am quite sure that every net user is familiar with them. Whether you are creating a new email account or registering at a forum or simply downloading a file, you will have to deal with a captcha. But, finding a good and effective captcha is tougher than it seems. Make them too easy and bots will manage to figure them out. Make them too tough and even human beings will have trouble. Rapidshare’s infamous cats and dogs captcha was a perfect example of captcha gone wrong.

Rapidshare-Captcha-Worst-Captcha-Ever

A group of Tel Aviv University scientists are currently developing a next-gen captcha, which they believe will be extremely difficult for bots to crack. The research project led by Prof. Danny Cohen-Or will be utilizing pictures with 3D-objects like a running man or a flying plane.

According to Prof. Cohen-Or, “Humans have a very special skill that computer bots have not yet been able to master. We can see what’s called an ‘emergence image’ — an object on a computer screen that becomes recognizable only when it’s moving — and identify this image in a matter of seconds. While a person can’t ’see’ the image as a stationary object on a mottled background, it becomes part of our gestalt as it moves, allowing us to recognize and process it.”

The proposed captcha is still a work in progress. It will take some time for the concept to move from research papers to real world applications. However, let’s hope that it will make life easier for us.

[via Techie Buzz]

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You’re probably aware that 64-bit and 32-bit versions of your operating system exist, but apart from ascribing to a bigger-is-better philosophy, you may have no idea what separates the two. The question: Should you use a 64-bit version of Windows, and why?

More and more frequently, users are installing the 64-bit version of their operating system of choice over the less capable 32-bit version. But most people don’t really have a full understanding of what the difference really is. Below, we’re taking a look at the most important differences so you can better understand what you gain (and potentially lose) if you upgrade to the 64-bit version of your OS. (The post focuses on Windows.)

We’ve already explained whether you really need 4 GB of RAM, a question that touches on the 64-bit issue, but now let’s tackle it in more detail.

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There are chances of losing data if unfortunately, your hard disk has a sector error or the compact disc in which the information is stored has severe scratches on it. It’s not always possible to recover files 100% completely but atleast we can give a try.

unstoppable copier

Unstoppable Copier recovers most of the files so they can re-read even if some parts of the file could not be recovered. The program lets you copy files from disks with problems such as bad sectors, scratches or that just give errors when reading the information. You can use the program daily as a backup of your system using batch functions.

It means, you will no more have to deal with cyclic redundancy check error. In addition the program includes command line support which enables you to run the program from other scripts to give a more robust use.

My Verdict: Unstoppable Copier is ideal for retrieving information from damaged CDs and DVDs you thought you’d never regain.

[via blogsolute]

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With the ever-increasing number of mobile internet users, webmasters have to make sure that there website is viewable on mobile phones. There a lot of checks and tests before a web page can be called ‘mobile friendly’, including page size, scripting, network, markup language used e.t.c.

To make things easier, World Wide Web Consortium (W3) has launched a Mobile Checker that runs a website through these standard tests to determine if a website is mobile friendly. All you need to do is simply enter the URL of the web page you want to check.

Mobile Checker run around 50 sub-tests and provides a final score out of 100. It also provides you a list of tests that the web page failed and details about each test. For most of the failed tests,  related best practice information is also provided for reference.

After you have implemented the recommended changes, you can run a test again to see if your score improved.

Techie-Buzz Verdict:

W3C Mobile Checker is a great little tool to check your website for mobile friendliness. It is completely free and provides information about the best available industry standards.

Rating: 4/5

[via Techie Buzz]

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photo credit

Good news! You woke up to find a shiny new computer waiting for you under the tree this year. Whether it’s a Windows PC, Mac, or Linux box, here’s a quick starter guide to getting it running on all cylinders.

Depending on whether the machine you got is Windows-, Mac-, or Linux-based, so just find the section that makes sense for you and get going.

[via Lifehacker.com]

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Firefox and Safari partially support it, Google’s Wave and Chrome projects are banking on it, and most web developers are ecstatic about what it means. It’s HTML5, and if you’re not exactly sure what it is, Lifehacker has an explainer.

Some of what they write:

What is HTML5? Some kind of really fancy link tag?

HTML5 is a specification for how the web’s core language, HTML, should be formatted and utilized to deliver text, images, multimedia, web apps, search forms, and anything else you see in your browser. In some ways, it’s mostly a core set of standards that only web developers really need to know. In other ways, it’s a major revision to how the web is put together. Not every web site will use it, but those that do will have better support across modern desktop and mobile browsers (that is, everything except Internet Explorer).

What Awesomeness can I expect from HTML5?

The big, marquee changes in HTML5 have already made some headlines, thanks to browser makers like Google, Apple, Mozilla, and others picking them up and implementing them. The shortlist:

  • Offline storage: Kind of like “Super Cookies,” but with much more space to store both one-time data and persistent app databases, like email. Actually, you can think of offline storage as something a lot like Google Gears—you just won’t need to install a plug-in to reap the benefits.
  • Canvas drawing: Sites can mark off a space on a page where interactive pictures, charts and graphs, game components, and whatever else imagination allows can be drawn directly by programming code and user interaction—no Flash or other plug-ins required.
  • Native video and audio streaming support: It’s in the very early stages and subject to format disruption, but sites like YouTube and Pandora could one day skip Flash entirely to bring you streaming audio and video, with timed playback and other neat features.
  • Geolocation: Just what it sounds like, but not limited to a single provider’s API or browser tool. HTML5 can find your location and use it to tailor things like search results, tag your Twitter updates, and more. Location-aware devices are a big deal.
  • Smarter forms: Search boxes, text inputs, and other you-type-here fields get better controls for focusing, validating data, interacting with other page elements, sending through email, and more. It may not sound that sexy, but it could mean less annoyance as a user, and that’s always a good thing.
  • Web application focus: Without breaking down the hundreds of nuts and bolts, it’s fair to say that HTML5 is aimed at making it easier to build wikis, drag-and-drop tools, discussion boards, real-time chat, search front-ends, and other modern web elements into any site, and have them work the same across browsers.

[via Lifehacker]

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sixth sense technology

This is a TED talk about the future technology-

Pranav Mistry is the inventor of SixthSense, a wearable device that enables new interactions between the real world and the world of data.

Wow.

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