A new online technique called deepfake is causing people to be worried about more fake news and other things that can mislead people. The word "deepfake" is a combination of "deep learning" (which is an important part of artificial intelligence) and "fake" (which means not real). Deepfake software allows people to replace part of a picture or video with another picture or video image. The result is a fake video. The software means you can put your face over the face of a talking president or movie star. This process will make your face speak in the voice of that president or movie star. Many people are worried the technology will be used during national elections. Deepfake videos could be used to trick voters.
A new deepfake app has gone viral in China. It lets users of the app put their face over the top of actors in scenes from movies or TV shows. The app is called Zao. It went to number one on the Chinese iOS App Store chart in just a few days after its release. A Twitter user has achieved a little fame by posting the Zao videos of himself in famous TV and movie scenes. His videos show that he really looks like the main actor in the movies The Hulk, Titanic, and in the TV fantasy drama Game of Thrones. It takes just eight seconds to do this. The Zao app is currently only available for people with a Chinese phone number. It cannot be downloaded from app stores in the USA or Europe.