Demystifying Credit Card Numbers
Wednesday, April 11th, 2007Ever wondered how credit card numbers are generated? The linked article explains all.
News and other tidbits that Chad Cloman finds interesting enough to share
Ever wondered how credit card numbers are generated? The linked article explains all.
The linked article is a technical discussion on IPv6, the next-generation internet protocol. For those Chad’s News readers who are not technical, I suggest just reading the first page and a half to two pages, which explain the history of IPv4 (the current internet protocol), why we need IPv6, and the IPv6 addressing scheme. Adoption of IPv6 has been very slow, due in large part to the popularity of network address translation (NAT). The switch to IPv6 can be quite expensive in both time and money, and for many companies there really isn’t a compelling reason to make the transition. The US Government, however, is helping the process by mandating a switch. In addition, Asian countries have an interest in IPv6 and are implementing networks that use the new protocol.
Link: http://arstechnica.com/…
Some advertisers are targeting their intended audience by creating ads that only qualified people can understand. My favorite is the one that requires you to know the first 10-digit prime number in consecutive digits of e.
Link: http://texturl.net/…
(via Neatorama)
The linked article is an interesting non-technical read on the history of Intel’s x86 architecture. Turns out that a significant percentage of the transistors on a modern-day chip exist solely to provide legacy support.
Link: http://news.com.com/…
Here are 10 tips for improving the reception of a wireless network.
Link: http://www.microsoft.com/…
(via Lifehacker)
Push a cork all the way through the neck of a bottle, so that it’s inside the bottle proper. This video shows how to get it back out again, without breaking the bottle or the cork. I wonder who originally figured out how to do this—it’s not intuitive.
IE7Pro is a free Internet Explorer 7 extension that adds some nice capabilities. Features include tabbed browsing enhancements, ad blocking, mouse gestures and crash recovery. Basically someone took the best Firefox extensions and implemented them on IE7.
Link: http://www.ie7pro.com/
(via Lifehacker)
This guy wanted to determine if dynamic web content (such as that generated by javascript) would show up in Google search results. He created a web site with two nonsense words in static HTML, two in dynamic javascript, and two in another form of javascript. Only the static words were indexed by Google. So if you have a web site that relies on dynamic content, don’t expect it to show up in search engines. This does not apply to PHP-generated content, because PHP runs on the server—unlike javascript which runs on the client.
The Googlebot ignores both javascript and cookies, which has been known to cause problems with poorly designed web sites.
Link: http://www.brainhandles.com/…
(via Slashdot)