For example, if there's a window, the camera could record what someone passing by is doing.
The camera can also record 1080p video at 30 frames per second.
Many digital cameras can also record moving video with sound.
What makes people permit a camera to record their private moments?
Cameras record the action at up to 7,000 frames a second.
After 14 miles or so, too tired to continue, he stopped running, only to find a camera recording the moment.
"That camera had better not be recording," he said finally.
The phone's 2-megapixel camera can record 320x240-pixel video and zoom up to 2x.
His camera was recording what he saw, as were the cameras of the five students.
One camera, at cheek level, faces forward and records the field of view.