Originally Posted by
Rebelyell
Most wiretap laws would not apply to a video recording, particularly if there is no sound. But this would vary from state to state. I personally don't believe a hotel maid has a reasonable expectation to privacy while cleaning a hotel room.
However, insofar as whether or not the material could be used in court, the answer is yes so long as the person making the recording isn't involved in law enforcement. The rules against illegal gathering of evidence only apply to police and prosecutors. If a private individual illegally collects evidence prosecutors can nevertheless use it. They may also prosecute the person illegally collecting the evidence, though.
This is incorrect and will vary from jurisdiction to jurisdiction. That is why multiple posts in this thread make it clear that there are no broad pronouncements which can be said to make this practice criminal or not or which could create civil liability for the individual stalker or, if the stalker is on a business trip, the stalker's employer.
The first step answer here is really simple. Before you do this, get the advice of a lawyer who practices in the specific jurisdiction.