"Individual security guard and private investigator licences can be verified online through ServiceOntario."

https://www.appmybizaccount.gov.on.ca/psis/app/viewInstance/view.pub?id=b8a079642c86db02078c30580494bcd348b4a2b49e71a70f5e277b27fb320136&_timestamp=95267021764114552

https://www.ontario.ca/page/requirements-security-guard-and-private-investigator-agencies#:~:text=To%20work%20as%20a%20security,be%20verified%20online%20through%20ServiceOntario.