When access the permission and medical form, a tool known as Recaptcha is used as a security measure. It is essential all information provided is protected and it is possible for a computer is attempt to gain access by submitting the form using many different combinations. This is known as a brute force attack.
A Recaptcha tool uses advanced techniques to determine when the form is being completed by a human rather than a computer (or robot). In many cases just by clicking the box achieves this check. However for some they are asked additional questions and have to select images. Please follow the instructions to complete, if you struggle, you may need to ask someone for help.
Further details on the recaptcha tool (which is provided by Google) can be found here – https://www.google.com/recaptcha/intro/