| 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 | ||