This is why such card chains designed in Japan boast a latch-based design which, when pulled with sufficient force, will automatically detach, able to be reused again later when the latch is reconnected.
為此，日本的悠遊卡鍊就加上「卡榫」設計，當拉扯力量過強時，就會自動斷掉，之後只要再將卡榫扳回來又能繼續使用。