<P> Research students developed a version of tag played using handheld WiFi - enabled computers with GPS . </P> <P> Flashlight tag, also called "Army tag", "Spotlight", and "German Spotlight", is played at night . Rather than physically tagging, the "it" player tags by shining a flashlight beam on other players . </P> <P> A traditional type of line tag, sometimes played in snow, is Fox and geese . The fox starts at the centre of a spoked wheel, and the geese flee from the fox along the spokes and around the wheel . Geese that are tagged become foxes . The intersections of the spokes with the wheel are safe zones . </P> <P> One person is "it" and a can is placed in an open space . The other players run off and hide, then it tries to find and tag each of them . Tagged players are sent to jail . Any player who has not been caught can kick the can, setting the other players free from jail . </P>

Where does the game of tag come from