She was designed both as a conversation agent and as a virtual human interface that would form a bridge between the two.

Thus the virtual interface may need to divulge some specifics to the user, such as whether or not it represents a physical interface directly.

The force of Jiun Bhao's irritated stare, even through a virtual interface, was unsettling.

You and I know that there's only one way to keep Master System honest, and that's the virtual interface.

Although this is most common with hardware, virtual interfaces have the same effect.

Dax entered commands into her desktop's virtual interface with a few gentle taps.

Soft Ergonomics generally takes into account the following human factors when building a virtual interface:

Physical Limitations: Not all who use a virtual interface are physically equal.

Efficiency: The virtual interface should allow efficient use of user's time.

Some network equipment uses the term loopback for a virtual interface used for management purposes.