Does anyone know of a duplicate-check add-on, that checks for dups in real-time as you enter the data?
Like this one which is however only available for old version 6:
Prevents duplicate data in real time.
Duplicate record is searched globally notwithstanding the security access level of the user.
When a contact is added by a user who do not have access to view that duplicate contact, he will be alerted that similar record already exists. However,when clicking on the link will not be able to access the record.