With the coming United Nations Arms Trade Treaty (ATT) that Canada has signed on to there are provisions in the ATT that forces a backdoor registry.
Under the provisions of the ATT importers, which can be either a person or business, are required to keep an electronic database of the firearms and possibly accessories that they import. The records from this database will be required to be kept for 6 years. The Canadian government can further request that any accessory that is encompassed under the terms "goods and technology" that is imported by an individual or business can also fall under the requirements to keep importation records. The punishment for the offence of contravening any provision or of the regulations is guilty of "19 (1) (a) an offence punishable on summary conviction and liable to a fine not exceeding $250,000 or to imprisonment for a term not exceeding 12 months, or to both".
So what does this mean in the simplest of terms to the average firearm owner? Considering that most firearms stores import a portion of their product themselves this now forces nearly every store to keep a ledger of what has been imported and who it's sold to. This is a record of your purchase, kept on file for no less than 6 years, that can be obtained by the government at any time.
This new legislation will force prices to go up as the importers, and thus retailers that deal with the larger importers, who are forced to manage more bureaucracy have to cover their costs of maintaining databases and adhering to regulations. Furthermore by forcing electronic databases of highly valuable information sought after by criminals to be kept, adherence to the ATT opens the door to malicious hacking. This jeopardizes the safety of the average firearm owner, which in turn would place the liability for the database breach at the feet of the store or importer and not at the government where it would truly belong.
Make no mistake, by forcing record keeping this is another form of firearms registry that is accessible by the government. However this time the security of this information is only as good as the store or importer that's holding the record, at no fault of the store or importer itself that's forced to comply with the new legislation.