First came the ENIAC- a large computer that filled a room in 1946 at the University of Pennsylvania. Then vacuum tubes were replaced by transistors, and transistors by microchips. Then the desktop revolution...
First came the ipod, then the iphone, then the ipad- what will be the next big 'i'? Will it be the iplant? The internet-enabled microchip implant which renders all passwords obsolete?
You might find this TEDx talk stimulating in consider what the future possibilities might be for implantables.
http://www.youtube.com/watch?v=fnghvVR5Evc