If you can't do, might as well go into teaching
Implied consent is far too broad of a term to make an assumption with. Yes, and assumption, because for a case like this, implied consent has never been adjudicated in the courts.
..and just because you place something into the public domain, doesn't automatically presume implied consent. Anyone who has taken a high school law class can get this question correct.
You park your car on public streets; therefore, implied consent says anyone can take it after you leave.
Sounds good, right? But obviously this isn't the case.
You'd think a professor could take 10 minutes to think this out and realize how wrong they are.
Another example... you put your garbage on the street, so now anyone can go through it and grab any old documents and other personal items you tossed out for themselves.
Again, sounds good, but in most countries... doing so is still considered stealing. Tossing something out doesn't give 'implied consent' that anyone can take it and use it.
So, once again... another so called security professional at a university who went into education because they couldn't actually perform well on the job. If you can't do, might as well teach.