<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	>

<channel>
	<title>Blindsignals &#187; luhn</title>
	<atom:link href="http://blindsignals.com/tag/luhn/feed/" rel="self" type="application/rss+xml" />
	<link>http://blindsignals.com</link>
	<description>Web Development, Business, and Life</description>
	<lastBuildDate>Thu, 20 May 2010 21:18:26 +0000</lastBuildDate>
	<generator>http://wordpress.org/?v=2.9.2</generator>
	<language>en</language>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
			<item>
		<title>How to check for legit credit card numbers</title>
		<link>http://blindsignals.com/2009/07/how-to-check-for-legit-credit-card-numbers/</link>
		<comments>http://blindsignals.com/2009/07/how-to-check-for-legit-credit-card-numbers/#comments</comments>
		<pubDate>Fri, 31 Jul 2009 00:23:08 +0000</pubDate>
		<dc:creator>chelfers</dc:creator>
				<category><![CDATA[ASP]]></category>
		<category><![CDATA[Web]]></category>
		<category><![CDATA[credit cards]]></category>
		<category><![CDATA[luhn]]></category>

		<guid isPermaLink="false">http://blindsignals.com/?p=294</guid>
		<description><![CDATA[I think the title says it all; I've seen many implementations for checking credit card numbers and in my opinion there is really only one that you need and actually works.
Sadly, still in use today by many code examples that I've run across is the good old


if ( first_digit = 4 ) then &#34;visa&#34;
elseif ( [...]]]></description>
		<wfw:commentRss>http://blindsignals.com/2009/07/how-to-check-for-legit-credit-card-numbers/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
	</channel>
</rss>
