Ever wonder how websites validate credit card numbers? The anatomy of a credit card number helps identify the issuing entity, among other things, but a simple modulus 10 algorithm devised in 1960 by Hans Peter Luhn of IBM is the first line of defense against mistyped card numbers:
10.10.07 / 9pm
I like the new layout. I really dig WordPress … if only I didn’t enjoy the icons and the ease of the “friends” page so much. 
10.11.07 / 4pm
You know, I could probably come up with a friends page if all of my friends published RSS feeds. It’s a good idea, I’ll look into it. And I do so admire your icons. How many millions do you have?
10.11.07 / 10pm
I’d rather not say. There are iconless children in Africa and I feel guilty about it.
This is the archive of my writings. Read more about this site, or see the other things I do online.
Comments are closed
Comments are currently closed on this entry.