It seems impossible, doesn't it? If it depended on the studios and distributors, every copy should be watched in an isolated bunker and by a single person, but despite their wishes, inviting someone to watch a movie is not illegal. That's how Wavelength works: a platform where users share their films stored under the UltraViolet system, which Hollywood itself created.
The Battle Between Sale and License
Every company wants you to go out and buy the DVD or Blu-ray of their latest movies, but if you decide to watch them with five or six people at your house, they start frowning. It's the classic conflict between "sale" and "license". Anyone who acquires a copy (whether physical or digital) wants to play it however they please, but the copyright hawks have a different view. That's how we find more and more restrictions on formats, platforms, content, and availability, not to mention the cursed DRM.
UltraViolet: Hollywood's Attempt at a Truce
Hollywood tried to "make peace" with the consumer by launching the UltraViolet system. The idea behind UltraViolet is to allow playback of those movies that the consumer purchases (or receives as a gift) on different devices, thanks to streaming of a digital version. The theory is decent, but in practice we see incompatible services, geographical limitations, and many other horrors. Now, what is truly interesting about UltraViolet is that it allows sharing your movie collection with six different people. And that's where Wavelength appears.
https://www.youtube.com/embed/GG2w763UCM0Wavelength: Sharing Your Collection
Wavelength is a portal where users share their UltraViolet movie collections, so that up to three people can watch a movie at the same time. The social component of Wavelength is fundamental, since it's not just a matter of logging in and clicking the first movie you come across. The user is supposed to invite friends and other contacts to publish their UltraViolet movies on Wavelength, and thus everyone shares content without breaking the law, since it is the UltraViolet system itself that allows it. Wavelength does not store any film, and when watching it, the user will be sent to the portal of the service authorized by the original provider.
The Fate of Wavelength
So far, those responsible for Wavelength have not managed to catch the attention of Hollywood, and the biggest concern is that someone decides to modify the terms of use that UltraViolet possesses to prevent multiple users from accessing the movies. Personally, I think they'll do it. Hollywood has made a fool of itself before, has "repented", and fundamentally, has wiped out with its elbow what it wrote with its hand. Wavelength is probably the smartest way to use what is by definition a DRM. I wish the best to Wavelength and its creators: It is a good idea surrounded by draconian visions.