The days of being caught short might just be numbered thanks to an app which shows where the nearest vacant loo can be found. It is the brainchild of Japanese telecom operator KDDI which is trialling the app in its office block. Sensors have been placed on cubicle doors which send real-time updates on whether loos are occupied or vacant to a central computer. If the trial is successful, the system could go public and be installed in railway stations, shopping malls and other large venues. Company spokesperson Daisuki Mauro explains the inspiration behind the app “People waste time by looking around for an available toilet on various floors, or by waiting until one becomes available…We believe this solution will help solve the problem by streamlining how bathrooms are used.” Well it is all about doing the business after all.