1.   A few other manufacturers, including Ford and Honda, have included data recorders on some cars, but GM is by far the leader in installing the devices.

2.   Some models are beginning to include voice recorders.

3.   These companies also offer high-end products like legal and medical editions and add-on vocabularies, as well as packages that include handheld recorders.

4.   In both programs, contestants live under the constant scrutiny of microphones and cameras, including infrared recorders.