Portability of an animal's health data between different tools

Portability is not having a copy. It is the ability to take the data elsewhere while keeping three properties: completeness, meaning nothing recorded is missing; readability, meaning the new tool understands what each field means; and reconstructability, meaning the relationships between values survive. An album of images satisfies the first property and fails the other two.

• Completeness: every entry comes out, including old ones and those marked as closed or cancelled.
• Readability: each value carries its unit, its date and, where relevant, the reference range of the laboratory that produced it.
• Reconstructability: you can tell which weight belongs to which visit, which report to which prescription, which photograph to which lesion.
• Independence: the file opens without the program that produced it, today and in five years.

The fourth property is the most neglected and the most expensive to recover. A proprietary format forces you to keep a program alive in order to read your own past. A documented tabular or textual format opens with any spreadsheet or text editor, even when the tool that produced it no longer exists.

The name is the worst possible key for a health archive. It changes on adoption, different people spell it differently, it repeats constantly within the same area and it does not separate two animals in the same household. A stable identifier has one useful property instead: it stays identical for the whole life of the animal, whatever happens around it.

A transponder compliant with the international standard carries a code of fifteen decimal digits: the first three indicate the country under the international numeric coding, or the manufacturer when the series starts from the block reserved for makers, and the remaining twelve identify the individual animal. The most widespread reading technology works at low frequency, around 134.2 kHz, and is the same in every country that adopted the standard. This means the number read by a scanner in Milan is the same one read in Lisbon.

Not every part of a clinical history is equally resistant to moving from one tool to another. Structured entries, those with a dedicated field, travel well. Free text travels as free text, so it stays readable but cannot be searched by criterion. Attachments need attention because they often come out without the link to the entry they belonged to.

The worst case involves laboratory values without their reference range. Two laboratories may measure the same parameter with different methods and publish different ranges: a value moved without its range becomes a number that can read as normal in one context and abnormal in another.

Every export format serves one purpose and fails at the others. Choosing only one is almost always a mistake: combining a document a person can read with a structured file a program can read covers both needs.

• Laid out document: excellent to hand to a clinic or attach to a reimbursement claim, useless for reimporting the data elsewhere.
• Tabular file: opens in any spreadsheet, suited to weights, expenses and repeated entries, awkward for attachments and long text.
• Nested structured file: keeps the relationships between entries and attachments, but needs a program able to read it back.
• Compressed archive with documents and an index: the safest shape for not losing attachments along the way.

Three technical details cause most silent problems. The first is the date format: written as year, month and day under the international standard it is never ambiguous, while in short forms the fifth of March and the third of May become indistinguishable. The second is units, which must be exported next to the number rather than assumed. The third is character encoding, which when wrong turns accented letters into symbols and makes a list of names unusable.

The right moment to export is not when you need it but before. Someone standing in an emergency room with a collapsing animal has no time to download anything, while someone with an archive already on the phone hands over the history in thirty seconds.

1. 1

   Check that the identifier is complete

   Make sure the microchip number in the profile has fifteen digits and matches what the last scanner read. If the animal is not identified, the archive hangs on the name and on you alone.

2. 2

   Export in two formats

   A laid out document for human reading and a structured file for reimporting. Keep them together, in the same folder, named with the animal and the export date.

3. 3

   Open the attachments one by one

   At least open the most recent report and the most recent photograph. If an attachment fails to open or has lost its date, the problem gets solved now rather than at the moment you need it.

4. 4

   Ask the clinic for its own copy

   The practice that followed the animal holds data you do not have: laboratory values with their reference ranges, imaging reports, anaesthesia records. Ask before closing the relationship, not after.

5. 5

   Repeat at regular intervals

   An export two years old is a photograph of a different animal. A recurring reminder every six months keeps the archive aligned without you having to remember it.

Transferring and sharing are two different operations. A transfer moves a copy and then ends; sharing creates access that continues over time and therefore needs explicit roles and the ability to revoke it. The practical criterion is least permission: whoever only needs to read must not be able to write, and whoever has stopped following the animal must not stay connected out of inertia.

• Read only access: suited to whoever keeps the animal for a period, a day care service or someone taking it to an appointment.
• Shared access between two people who both look after the animal: both write, so it matters who recorded what.
• Handover to a clinic: a copy, not permanent access, unless there is a continuing care relationship.
• Revocation: plan it from the start, because a share with no end date gets forgotten and stays live for years.

One legal point surprises many people: an animal's clinical data are not the animal's personal data, since animals have no legal personality, but the file almost always contains personal data about the people involved, such as names, contact details and address. The protections that apply therefore concern those people, and requests for a copy or for erasure are exercised on that basis.

On portability the product offers an export of the whole account and an export of the individual animal record, a document archive attached to the profile, a unified clinical timeline that recomposes visits, tests and treatments into one sequence, and a health certificate to hand to whoever receives the animal.

• Data export from settings and single record export from the animal profile.
• Document storage on the profile, keeping reports and certificates attached to the animal instead of scattered in the phone gallery.
• Read only sharing and shared management between two people, revocable at any time.
• Unified clinical timeline, laboratory value trends and a plain language report in the clinical area.
• Account deletion from settings, to close the relationship once you have taken the data away.