|  | The Handy21 handheld: a unit the size of a cell phone, with screen, able to act as your personal companion, with wireless connectivity, voice control, and more. He showed a prototype case, though the actual unit will be much smaller. The hardware itself is being developed in conjunction with another lab. | |
|  | The Enviro21 wall unit: A larger unit, not demonstrated. | |
|  | The Network21: The server-type unit, also not shown. | |

|  | Michael Dertouzos and Handy21 prototype | 
|  | Speech recognition and synthesis and understanding | |
|  | Individualized knowledge access | |
|  | Automation | |
|  | Collaboration | |
|  | Customization | |