But most carriers are not ready to make a commitment to an expensive new technology.

As a consequence, companies are selling more expensive technology than they were a few years ago.

But the industry is less certain about when this expensive technology will turn up in coach seats on domestic flights.

"It's by far one of the most expensive technologies available now."

An alternative but more expensive technology is Hall effect sensor.

The new collaboration is not necessarily the result of expensive, flashy technology.

One was cost - its use was a new technology expensive at the time.

Few had the money to spend on the expensive technology.

He said, however, that it was not an "expensive technology."

But with this call, all of that expensive technology went unused.