First let me excuse myself for the initial misunderstanding. This feature - setting custom character sets to be used for the RadCaptcha Image text - has been requested before and it is already included in our TODO list.
Regarding the second question, I think I did not explain our plans clearly. We are planning to render only the RadCaptcha image, and set which textbox should be validated. This will enable the user to:
- Place the RadCaptcha control (i.e. only the image rendered) anywhere on the page.
- Choose which textbox should be validated by the RadCaptcha. This textbox can be placed anywhere on the page (i.e. it can change its position at design time).
- Choose which label explains the user to enter the RadCaptcha code. This label can be placed anywhere on the page.
the Telerik team