There are unfortunately plenty of situations where someone may need to provide several pieces of key information to medical personnel, but may not able to. The longer the medical history and the more potential issues there may be, so senior citizen would probably be the first beneficiary.
Very young kids or adults with conditions that may incapacitate them randomly like seizures would also be unable to communicate with emergency services. Besides those higher-risk groups, everyone who temporarily runs a risk of needing emergency services could benefit as well (hiking, risky situations)
The medical personnel could already work with WRIXO and have some pre-existing WRIXO account. It is however not necessary. It is possible for medical workers to request a temporary access PIN that expires after 15mn. That is long enough to get the important information. The bracelet and service are compliant with HIPAA, which is a government standard for medical information access/exchange. It addresses both privacy and security.
Upon getting the bracelet, users create a WRIXO account and pick/fill which information to share. Doctors potentially have access to the platform, although the most common information such as allergies, emergency contacts and more can be entered by the bracelet user (or their guardian).
Both standard and premium editions feature the same hardware, but the premium version includes a subscription to the cloud platform with the possibility of having more information such as prescription history, medical images and more. The Standard version uses the free platform access and allows to store the most frequent medical information. That should work for the overwhelming majority of the possible medical situations.
The IndieGoGo page of WRIXO features deep early user discounts (starting at $20), especially for those who want to get a batch of 3-4 devices. The product is expected to ship to the early backers in November. If you do not know how Indiegogo or crowdfunding works, you should read this page.