Periscope, the live-video-streaming app owned by Twitter, introduced a new feature that lets broadcasters draw in different colors over a video stream. The sketches, which are visible to viewers, appear for a few seconds and then fade away. Unlike Snapchat’s similar sketching feature, Periscope’s tool includes a color picker, so users can select an on-screen hue from their live feed and mimic it in their sketches. The tool is a useful way for broadcasters to direct the attention of viewers without having to rely on speaking into the microphone, which is not always convenient.
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