What happened: A Stockholm-based startup, Epicenter, has presented a rice-sized chip that can be stored in an individual’s skin storing the proof of Covid-19 vaccination. The Swedish firm’s chip is capable of storing a Covid passport that can be read by any device using the NFC protocol. Details: The viral video on Twitter also shows a machine recognizing the rice-sized chip in an individual’s hand. South China Morning Post’s video also quotes a man saying, “Imagine showing your Covid-19 passport with just a flash of your arm.” The company has also revealed that the rice-sized chip is a versatile technology and can be used in many different ways. 
Also: The microchip can be embedded under a person’s skin, either thumb, pointer finger, or arm. After the chip is implanted, it can store data such as a vaccine passport using NFC-compatible devices. While the procedure for the chip implantation may cost around 100 dollars and is entirely reversible.