And example of optimization enabled by the pervasiveness of mobile phones.

Why having the lights on all night? Why not turning them on just when someone needs them? Some communities in Germany have used different mobile phone based system just for that. Walking home at night? Just call a number and your route will illuminate for a limited time. The system is used also for more concrete applications as illuminating sport areas.

Image from http://www.dial4light.de

Possibilities of using near field communications for that? combination with more simple movement sensors?with route planning? With renting bikes systems? Problems with privacy? Advantages of letting know your position when walking home at night.

A fine example of optimization using ICT.

Via Treehugger.

Dial4Light