letters and numbers purpose?

Electronics Computer Programming Q&A
Post Reply
spindown
Posts: 139
Joined: Thu Jan 31, 2002 1:01 am
Contact:

letters and numbers purpose?

Post by spindown » Sat Jan 29, 2011 5:29 pm

I recently changed my email address and with every change at most of the
sites it presents letters and numbers in different positions and then asks
you to write them down in a straight line. I suspect this is some security
strategy. Can someone explain the how and why? Thanks Paul

psycho
Posts: 388
Joined: Thu Jan 10, 2008 8:13 pm
Location: Northwest Indiana
Contact:

Re: letters and numbers purpose?

Post by psycho » Sat Jan 29, 2011 6:15 pm

You mean this:

http://en.wikipedia.org/wiki/Capcha

(and other variations).

Robert Reed
Posts: 2276
Joined: Wed Nov 24, 2004 1:01 am
Location: ASHTABULA,OHIO
Contact:

Re: letters and numbers purpose?

Post by Robert Reed » Sat Jan 29, 2011 8:36 pm

Thank you Psyco for that tidbit. I always wondered why I had to decipher and type in that info when replying to certain web sites.Now it makes sense.

psycho
Posts: 388
Joined: Thu Jan 10, 2008 8:13 pm
Location: Northwest Indiana
Contact:

Re: letters and numbers purpose?

Post by psycho » Sat Jan 29, 2011 8:47 pm

Sometimes sites will ask a question, too. Not a question that a bot could easily answer. Something like 'What letter does football start with?" That way a bot would not (theoretically, anyway) be able to create accounts and spam a forum.

Hope it helps,
Kevin

Robert Reed
Posts: 2276
Joined: Wed Nov 24, 2004 1:01 am
Location: ASHTABULA,OHIO
Contact:

Re: letters and numbers purpose?

Post by Robert Reed » Sun Jan 30, 2011 4:49 pm

Sounds like something that would be useful here!

User avatar
dacflyer
Posts: 4559
Joined: Fri Feb 08, 2002 1:01 am
Location: USA / North Carolina / Fayetteville
Contact:

Re: letters and numbers purpose?

Post by dacflyer » Mon Jan 31, 2011 8:53 am

i agree 100% we need this here also.. even craigslist uses it, when you post anything..

User avatar
frhrwa
Posts: 897
Joined: Mon Feb 04, 2002 1:01 am
Location: Eastern Washington (state) and N. Las Vegas (winter)
Contact:

Re: letters and numbers purpose?

Post by frhrwa » Tue Feb 01, 2011 9:10 am

great idea.. we should go for it..
JESUS”…… don’t leave EARTH without HIM!

psycho
Posts: 388
Joined: Thu Jan 10, 2008 8:13 pm
Location: Northwest Indiana
Contact:

Re: letters and numbers purpose?

Post by psycho » Fri Feb 18, 2011 7:52 am

Some sites have them enabled for your first xx posts (15, or whatever). Others are more careful. My thinking is that if a bot hacks into someones account, the capcha will still prevent them from posting. I cant think of anything else because having them always enabled is a major pain in the rump...

Just my .02
Kevin

Post Reply

Who is online

Users browsing this forum: No registered users and 3 guests