# Captcha Field

## What does it do?

- **General:** Want to prevent spam? Spamshield is integrated in powermail 2.x. In addtion you can add a calculating-captcha field to the form. The form can only be submitted if the result of the captcha is correct. You can use another captcha extension instead of the build-in calculating captcha (see TypoScript part).

## Frontend Output Example

![example_field_captcha](../Images/example_field_captcha.png)

## Backend Configuration Example

![record_field_captcha_tab1](../Images/record_field_captcha_tab1.png)

![record_field_captcha_tab2](../Images/record_field_captcha_tab2.png)

## Explanation

| Field                            | Description                                                      | Explanation                                                                                                                               | Tab      |
|----------------------------------|------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------|----------|
| Title                            | Add a label for this field.                                      | The label is shown in the frontend near to this field.                                                                                    | General  |
| Type                             | Choose a fieldtype.                                              | See explanation below for a special fieldtype. Different fields are  related to some fieldtypes – not all fields are shown on every type. | General  |
| Description                      | Add a description for this field.                                | Per default a description will be rendered as title-attribute in the labels in frontend.                                                  | Extended |
| Variables – Individual Fieldname | This is a marker of this field.                                  | Use a field variable with {marker} in any RTE or HTML-Template. The marker name is equal in any language.                                 | Extended |
| Add own Variable                 | Check this, if you want to set your own marker (see row before). | After checking this button, TYPO3 ask you to reload. After a reload, you see a new field for setting an own marker.                       | Extended |
| Language                         | Choose a language.                                               | Choose in which frontend language this record should be rendered.                                                                         | Access   |
| Hide                             | Disable the form                                                 | Enable or disable this record.                                                                                                            | Access   |
| Start                            | Startdate for this record.                                       | Same function as known from default content elements or pages in TYPO3.                                                                   | Access   |
| Stop                             | Stopdate for this record.                                        | Same function as known from default content elements or pages in TYPO3.                                                                   | Access   |