The voluntary, informed agreement of an individual to the collection, use, or disclosure of their personal information.
For consent to be meaningful under PIPEDA, individuals must understand what information is being collected, why, and how it will be used. They must be able to say no without penalty, and they must be able to withdraw consent at any time.
Express consent is explicit (checking a box, signing a form). Implied consent is inferred from context. The more sensitive the information, the more explicit the consent should be.