Also, electronic systems using satellites help to keep track of position.

Although scientists use satellites for a wide variety of studies in space, students need to understand that they have many other uses, too.

About technology already used in other cities to track buses using satellites (big problems here).

It can also be done using satellites I believe.

"I thought they used satellites and stuff like that."

For that reason, development work began on new technologies using satellites at lower orbits.

The company was one of the first to use satellite tracking to provide a text message service to passengers.

"The only thing that you could even think of as similar between those companies and us is that they both use satellites," he said.

I can't imagine anyone using dial-up or satellite at this point, it just makes no sense.

Another possible method is using specialized satellites to track these targets.