The World's Shortest Escalator

The world's shortest escalator in a shopping center in Japan, precisely in the Kawasaki More's Department Store.
This escalator has a height of only 834 mm and consists of 5 steps only.
Up until now is still a question as to what made ​​this escalator, whether to help people who are unable to walk (disable)?

The problem again, this escalator to go down and not up and actually existing stairs next to it. To be sure, this escalator will increase electricity bills in this mall.
Oh yes, this escalator has also been entered into the "Guinness Book of Records" as the world's shortest escalator. Perhaps more precisely to hold the title as the "escalator of the most useless".