From BBC News:
Hat tip to Rod McKie!
"The video-in-print ads will appear in select copies of the US show business title Entertainment Weekly.
"The slim-line screens - around the size of a mobile phone display - also have rechargeable batteries.
"The chip technology used to store the video - described as similar to that used in singing greeting cards - is activated when the page is turned.
"Each chip can hold up to 40 minutes of video."