Deep Nostalgia is a new AI-powered technique from online family tree service MyHeritage, which adds facial animations such as smiles, nods, blinks, and head tilts to still portrait photos. Using the website or mobile app, users can choose from a set of pre-recorded animations that can be transferred onto their own still photos. The service warns that its technology should not be used to try creating "deepfake" videos of public figures or anyone else without their permission. You can crop faces from group shots but cannot yet animate multiple people in one frame. A watermark will be applied to indicate that such animations are generated artificially.Users can sign up for a free account to use Deep Nostalgia, but