You mean gckey or ecas or PR Tracker ?
But ecas we can put our personal detail like UCI, Name, DOB, Country Of Birth,
Below link is for ecas, PR Tracker
ECAS
https://services3.cic.gc.ca/ecas/security.do?lang=en
PR TRACKER
https://prt-srp.apps.cic.gc.ca/en/login
GCKEY...