Adding Simple Math Based Security Question to Contact Form

Completado Publicado Nov 21, 2013 Pagado a la entrega
Completado Pagado a la entrega

I have six landing pages (single page) that have a contact form. the landing pages are already done. I only need the security question part implemented. To combat spam, I would like to implement a simple captcha. (See image). It's a simple math problem that needs to be "Solved". the math problem should rotate between several "math problems" to make it less likely that a bot will be able to quickly solve. Here is a suggestion on how to implement this:

Here's what I've found to be very effective (and dead simple):

Put a hidden field on your form. Give it a name like "phone" or something similar/common and put in a default junk value.

Put another regular text input field on your form, but hide it with CSS. Make that one empty. Again, give it a "real" sounding name (first_name, phone_number, whatever).

When the form is posted, verify that the hidden field still has the default value and the field you hid with CSS is still empty.

You're basicly taking advantage of the fact that most spam bots will simply fill in every field in the form in order to avoid failing any required field validation checks. Some might be smart enough to ignore hidden fields, but I've never seen one that was smart enough to ignore fields hidden with CSS.

I'm open to suggestion how to implement this.

Put in a bid for the project and I'll post the exact landing pages that need to be worked on.

CSS HTML JavaScript PHP

Nº del proyecto: #5150595

Sobre el proyecto

14 propuestas Proyecto remoto Activo Nov 21, 2013

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webxtreams

Dear Sir, I have good knowledge and experience of working with Wordpress theme customizations, error handling and theme developments. Sir, I have already created my own plugin same to this. And drag the image proc Más

$50 USD en 2 días
(544 comentarios)
6.9

14 freelancers están ofertando un promedio de $110 por este trabajo

mituld

Hi I work towards providing reliable, relevant and robust IT solutions at most competitive prices to my customers. I ensure 100% customer satisfaction so lets start Thanks

$195 USD en 6 días
(378 comentarios)
8.2
niravvirani17

Ready to start "NOW " Give me chance to prove my ability and also quality work i am waiting your positive replay from your side i am highly interested to work with you

$144 USD en 5 días
(640 comentarios)
8.1
abhius

Hello Sir, I can do the job as required. Very much experienced in PHP and have implemented captcha in several websites. Assure you to be there till you are satisfied. Looking forward for your reply. Regards, Más

$69 USD en 3 días
(198 comentarios)
7.3
phpsunil

hi there, simple captcha and simple maths question using ajax javascript already done in many of our projects. if need urgently contact me will do it within few hours.

$53 USD en 2 días
(18 comentarios)
5.1
afanamichael

Hello LOTUSCreative, Your solution is a temporary one until the person who spams your forms know your "little"secret. The best way is to implement a math question like: showing in a image 2+2 or 3*7 and in a text fi Más

$40 USD en 3 días
(28 comentarios)
4.8
fasttps

Hi hope you are doing well Elegant Soft have a software development team which completed many successful projects in WordPress, Joomla and in other latest technologies. Software Requirement Analysis: ** Add Sim Más

$155 USD en 6 días
(9 comentarios)
4.8
bistanil98

Need more detail,can we discuss this,to know more detail,check Private Message. We have a team of professionals,they have more than 11 year of experience,so we can manage this work and will give you quality solution

$245 USD en 12 días
(40 comentarios)
6.8
vaibhavpandeyvpz

Quite easy & good explanation. I liked that !dea but I still recommend captcha/random-questioning to avoid **REAL** spam! Would like to have a look at those pages they need it.

$110 USD en 3 días
(7 comentarios)
3.5
webplaceinfo

I am having more than 6 years experience of working as a web developer and having a great exposure of website designing and Development in PHP, MySQL and Open Source Technologies like worddpress, oscommerce, zencart, Más

$30 USD en 1 día
(14 comentarios)
3.5
algos2013

Hello, I have gone through your requirement you have mentioned in your project details and assuring you that I will do the work by putting the excellency of my 4 yr experience of development and project analysis. I am Más

$35 USD en 1 día
(0 comentarios)
0.0