Not accessible as visually impaired people cannot see the images and input the requested information.
+This will work with the screen readers, as the user can “hear” the word(s), but it can be exploited by smart BOTS and presents the same problem as Image Based CAPTCHA’s for the visually impaired. Here is an audio CAPTCHA that covers it in details.
+Uses digitized words but presents the same problem as Image Based CAPTCHA’s for the visually impaired.
+In addition to the above mentioned CAPTCHA’s. the following are also used to prevent attacks.
+When bots crawl, they typically look for common field names like email address, name etc. This information can be made obscure as a way to deter bots but it would be confusing for our legitimate end users. This option is accessible, but not user friendly.
+These are fields that are hidden from the user but visible to the bots. If a bot fills out these fields, it can be identified and blocked. This method is accessible as long as the hidden fields are properly implemented.
+These techniques measure the time taken to fill out a form. Bots typically fill out forms much faster than humans. If a form is filled out too quickly, it can be flagged as suspicious. This method is accessible as it does not rely on visual or auditory cues.
+A field that is not required for business can be hidden using Cascading Style Sheets (CSS). A BOT would typically complete this hidden field and upon Submit, we can check if that field has data and if it does we simply reject submission. This option is accessible, but can be hacked.
+Random questions can be asked based on “other” input from the user. For example: What is the second and seventh digit of your phone number. This option is accessible, but can be hacked and there is a significant level of effort required to implement this option.
+Capturing an email address and implementing an email confirmation process protects against BOT attacks because an email which contains a unique confirmation link is sent to the user immediately after form submission. Successful confirmation via this link verifies the authenticity of the user and persists the data. If the subscription is not confirmed, within a period of time as identified by the business, the data is discarded. This ensures that the data committed to the database is from actual users and not BOT submissions, which in-turn ensures the integrity and accuracy of the data.
+To further secure the form data, it is recommended that the following additional functionality be implemented as further security.
+Although as mentioned above, on its own this option is not completely secure but when used with the email address/confirmation process it adds an additional layer to protect data and is not difficult to implement. To ensure accessibility and compliance, this field will be hidden visually and from screen readers, and the input value of this field will be checked before accepting submission of data.
+Implementation of the following methods for the web form are recommended to optimize user experience and accessibility, as well as ensure data integrity and accuracy:
+If you wish to know more information about CAPTCHAs and alternative methods to prevent BOT attacks we encourage you to visit the Captcha Alternative and thoughts page on the W3C website.
+How the honeypot technique should work:
+label element that's associated to the input so a bot can figure out what's being asked.required" to the label text, and not embedding a class name like "hidden" or having style="display:none;".required attributes to the <input>, then get the browser to ignore it: either remove with JavaScript just before form submission or use the novalidate attribute on the <form> element.class="sr-only", class="wb-inv")tabindex="-1"aria-hidden="true" on an ancestor element of the input and labelThe following code is the bare minimum needed for this to work. This is a website registration form that requires a username, a password (to be entered twice), and an email address. The Birthday field is a honeypot field.
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