//create new route

Route::get('/checkAuth', function() {
})->middleware('auth');


//add this script to your master layout file
  <script>
setInterval(function() {
  $.ajax({
      'url': '/checkAuth',
      'success': function (response) {
               if (response == true) {

                }
            },
      error: function( jqXhr, textStatus, errorThrown ){
           if (errorThrown == 'Unauthorized') {
              location.reload();
              alert("You are logging out because you have logged in from another session!");
           }
      }
  });
}, 1000 * 60 * 1); // will check every minute for Auth
</script>

// that is all, every page will have the script embeded and will run every minute to check if logged in. If not the page will refresh forcing a login then return you back to the page you were at