On a very high tower your ashes are put in spheres with your picture. When somebody misses you, they send a text message to your "grave" and it lights up in the sky. I imagine it always blinking, like a Christmas Tree all year round. The project's name is "The Last House" , by Chan Joong Kim.
Here:
http://www.designboom.com/snapshots/venice_06/korea.html At the Venice Biennial of Architecture, 2006.
