Japanese gravestone maker Ishi no Koe ("Voice of the Stone") is going to sell gravestones with embedded two-dimensional bar codes called QR code (common in Japan).
When scanned with a QR capable cell phone, visitors can view pictures, video and other information about the deceased: http://blog.wired.com/underwire/2008/03/japanese-graves.html - via Tokyo Mango
Personally, I want a credit card operated vending machine selling my Autobiography (extra of course for signed copies).