I was thinking of a directory that works like a station. Got multiple smaller controls connected to it, something about the size of a book so its better handheld. So that more than 1 person can use it at the same time, 3-4 would be just nice, er maybe?

1 of the features would include how to walk from the current position of user.
E.G. you can see your map. Then a moving arrow shows you how to walk.
uhhuh. then shows the nearby shops for easier navigation, just in case the user may happen to know where the other shops are.

and the current capacity of the shop. so user need not walk until the shop to realise it's full house then feel stupid -_____________-"" for taking such a long time to decide only to find out there's no space. Hahahaha. Or they can choose to reserve a space by leaving their contacts and go there 20 min later.