Capturing sensitive data in REDCap

At present the University of Manchester REDCap Service is not suitable for collecting personal/sensitive data which contains identifiable information. It is worth questioning what data needs to be collected and why? e.g. is it necessary to collect the full date of birth or would year of birth suffice?

If there is a justifiable reasons for acquiring personal/sensitive data with identifiable information can it be separated from the actual research data collected using REDCap using anonymisation/pseudo-anonymisation methods.