Jerk-o-meter

Nice gadget...Jerk-o-meter
Description says gadget tells you whether you are not paying attnetion..But I feel it should be other way round..
Project lead of this new invention from MIT was on radio KNX1070... When the Lady on radio asked him a question that can this gadget be used for husbands :) ..he was confused.. may be he is still enjoying his bachelorhood ;)