The idea is that the Announciator detects your presence as you pass by it and automatically replays any pre-recorded message you choose to leave on it - "Can't you read a note like anyone else, you illiterate moron?" might be a preferred default setting. Presumably, its manufacturers have balanced the Announciator's "hands-free" message delivery with its potential to scare the life out of you as you walk through the door. I suppose you could always record a stern dietary admonition and stick it on the fridge.
The Announciator costs pounds 39.95, for details phone 0990 80 70 60Reuse content