I actually have a hard time picturing a use of these technical measures that is not anti-competitive, and I also have a hard time envisioning situations where it'll actually help a copyright holder.
In most cases with that digital lock that's put on the content, the key is held by somebody other than the copyright holder. This is a non-owner lock. So for the key that's on these devices that is authorized to access the content, again, the lock is specifically denied from the owner. We should always be asking who owns what is locked: who has the keys? If it's somebody other than the owner who has the keys, you should be wondering exactly what they are trying to pull on us.
There's something dishonest going on there, which is why I suggest taking these things into the right areas of law. For instance, if you have an access control that's protecting your electronic commerce website, well, e-commerce, first of all, is a provincial responsibility, which gets us right back into the constitutional question. But that's where that legal protection should be, in the right area of law. Copyright is not the right area of law to be protecting an e-commerce site.