Additionally, some smart rings allow the wearer to see and feel real-time heartbeat of the 2nd smart ring wearer, where the heartbeat is displayed on the ring in similar way by means of lighting up and vibrations.[13] Such smart rings require connection to a smart phone with active data or Wi-Fi connection to allow the transfer of data between two smart rings. The idea behind such function is to advance on premise known as Vena amoris and serve as a digital alternative to classic wedding or engagement rings.