If you live in Toronto Area
You can walk-in to the police clearance division of Worldwide Forensic Services Inc, with two pieces of Identification Documents. They will take your digital fingerprints and submit them electronically to the RCMP. Normally he RCMP takes up to 72 hours to process the application and sends the results to the applicant or third party (as per request of the applicant) by regular mail.
The processing time is longer if a person has previous criminal record.
If you live overseas
There is an easy way to obtain Certified Criminal Record Check from the RCMP, Canada:
Contact Worldwide Forensic Services Inc to receive guidelines and forms for submission of your fingerprints to the RCMP electronically. The electronic submissions of fingerprints are processed by the RCMP in 72 hours (if there is no criminal record in Canada) and after that the RCMP send the certified criminal record check via regular mail.