A protective casing for a ring is disclosed. The protective casing comprises a body constructed from stretchable silicone material that ensures robust protection against physical damage such as scratches, dents, and environmental wear. The protective casing further includes an NFC chip integrated with the body. The NFC chip is configured to securely store and transmit tokenized credentials. The protective casing further includes a conductive antenna, strategically arranged to optimize signal transmission with an external NFC-enabled terminal. The protective casing includes a first portion formed of a rigid material for securely encapsulating the NFC chip, and a second portion formed of a stretchable material for housing the conductive antenna.