How does that system differ from what you've done?

But both these systems differ from remote keyless access in two ways.

Although 911 systems differ from place to place, they have elements in common.

Because each group developed the processing system for its own language, the systems differed in their capabilities.

The two systems differ in the way sound waves are transmitted.

My system would differ only in benefiting a different self.

Though these two systems differ in their operation their equipment is much the same.

Though the two systems differ in several technical respects, they would have similar overall structures.

Where these systems most notably differ is in their units of volume.

Updating systems differ in the types of program changes that they support.