the invention provides a prompting apparatus comprising a foldable prompting box which includes two symmetrical opposite walls which can be open and closed , a bottom board which can be folded up and released , and a rear wall , which jointly define a space for housing a two - way see - through mirror and the lens of the camera . the cover defines a space for a user to slide in a tablet device which runs a prompting software application . the pre - designed text is displayed on the tablet device &# 39 ; s screen at a speed that the speaker feels comfortable to read . when the apparatus is not in use , the prompting box can be easily folded into a flat compact for the user &# 39 ; s convenience to carry .