The only sort of safety equipment Alliance has on-line is a simple pen register.

Mr. Kerr doesn't disagree that standards for getting a pen register should be tougher.

In another locked room a group of people were working with a device called a "pen register."

A pen register is an electronic device that records all numbers called from a particular telephone line.

The term has come to include any device or program that performs similar functions to an original pen register, including programs monitoring Internet communications.

With the passage of time, any instrument that could be used for this purpose came to be defined as a pen register.

A pen register is similar to a trap and trace device.

A pen register recorded incoming and outgoing telephone numbers, all routine.

The pen register was installed on telephone company property at the telephone company's central offices.

They can do something called a "pen register."