nl_tokens: Records movement for the last 100ms
pl_tokens: function addTrackingPoint ( x , y ) { var time = Date . now ( ) ; while ( trackingPoints . length > 0 ) { if ( time - trackingPoints [ 0 ] . time <= 100 ) { <mask> ; } trackingPoints . shift ( ) ; } trackingPoints . push ( { x : x , y : y , time : time } ) ; }