Enabling Visual Confirmation

Another weapon in the war against illegitimate registrations is the visual confirmation process, which generates a random code embedded in a somewhat distorted image, as shown in the example in Figure 10-10. This ensures that programs creating accounts cannot successfully complete registration, but humans can. The validation code must be entered correctly in order for registration to continue. This feature was backported from phpBB 3.0 to recent versions

Figure 10-10. The visual confirmation of phpBB 2-°.

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Figure 10-10. The visual confirmation of phpBB 2-°.

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The option to enable visual confirmation lives directly underneath the option for account activation, in the General Configuration section of the Administration panel.

■ Note If you do not have Enable Visual Confirmation as an option, you need to upgrade your phpBB installation. See the "Installing Updates" section earlier in this chapter for information about how to do just that.

Be aware that using the visual confirmation system may impede users that require the assistance of a screen reader, as the screen reader will be unable to interpret the contents of the image. phpBB recognizes this can be a problem and provides a link to the administrator e-mail address you provided when you set up phpBB (which you can change through the Administration panel, under Configuration). This gives users who may have difficulty with your image the opportunity to contact you to assist with registration. If you are contacted by a user who is having problems with visual confirmation, simply register the account for her under her e-mail address. phpBB will e-mail the user directly with the requisite registration information. Despite the potential for this problem, I still heartily endorse using visual confirmation in your registration form.

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