Imagine a situation where the patient is unconscious, and thus the paramedics are unable to figure out the immediate recourse to be taken.
As of now, the patient is taken to the hospital ASAP, and then the medical practitioners use their experience to figure out the problem. But it’s already 9 years since bitcoin have existed, and the property of its underlying tech “blockchain,” i.e., immutability and security has been used by Wal Mart to file a US patent, where the medical history of the patient can be accessed via a wearable device even if the patient is unconscious.
As our readers are aware that to read any information in the blockchain a person would require a private key and a public key. To circumvent the patient’s inability to provide private key during the time of unconsciousness, Wal-mart has proposed to use at least one of the fingerprint, an iris, a retina, or a facial feature as input to reveal private key.
This input can be scanned via a biometric device, and the proof of access will be stored in the blockchain so that the patient is aware that his medical record has been accessed.
This is, of course, a patent application and to expect such product shortly would be tough as the technology is still immature for such complex applications. For instance what kind of consensus protocol be used or should it be public or private or a consortium blockchain.