https://joy.videvo.net/videvo_files/video/free/2015-09/large_watermarked/Tablet_touching_chroma_key_preview.mp4 Touching Tablet 4K 4k footage of a female hand powering on tablet and touching tablet for chroma key. 4Kandroidappapplicationbrowsebrowsingchromacomputercomputingdevicedigitaldisplayfingergamegreen-screenhandinteractiveinternetipadmobileportablepresentationscreenscrollscrollingswipeswipingtablettouchtouch-screenUHD