Why do I have to get my fingerprints taken?

Your fingerprints will be electronically sent to the California Department of Justice and the FBI. Both the DOJ and FBI will run a criminal background check and report their findings to the California Department of Real Estate.
The DRE will use the criminal background check to verify that you meet their qualifications for "honesty". The DRE requires all applicants to be honest and truthful.
For this reason, you should disclose any prior criminal activity to the DRE