A hotel that wants to talk about longevity does not need to know its guests' bodies; it needs to know its rooms.

Why it matters

The question comes up often, in two forms. Some directors are surprised that a longevity audit measures no one. Others fear the opposite: that we will ask them to collect data they know neither how to protect nor how to interpret.

Our answer comes down to one rule: we measure the venue, not the guests. The hotel keeps no biometric data.

What is established

Health data is a category apart. The European data protection regulation classes data concerning health among the special categories, whose processing is prohibited except for limited exceptions, such as explicit consent. For a hotel, collecting a heart rate or a sleep score is not a trivial act. It is a legal, organisational and security commitment.

A room's environment can be measured reliably. CO2, noise, colour temperature, temperature, light: these are physical quantities, measurable with common sensors and a simple protocol. They say nothing about a person's condition. They say what the room offers them.

Our commitments. The audit involves no measurement of guests or staff, no medical act, no quantified health promise. The values we aim for in a room are public: CO2 below 800 ppm, noise below 30 dB, evening light below 2,700 K, 18 to 19 °C, filtered water, morning light above 1,000 lux. Each room can publish its readings.

What is emerging

Guest self-measurement. Part of the advanced clientele already wears its own devices. In the longevity room, the hotel can offer guests the chance to measure themselves with devices made available. The guest leaves with their figures; the hotel keeps none of them. The value of tracking is established; the interpretation of these measurements over a short stay remains debated.

Human measurement by IO8. When a venue wishes, a diagnostic day can be organised on site, run by IO8 and not by the hotel. Each person keeps their results in their personal space. The hotel receives, where applicable, an anonymous collective summary. This format is separate from the audit and is not a condition of it.

A single indicator on the hotel side. We recommend one question about sleep at departure, with no named health data. Its value as a quality indicator remains to be confirmed in the first venues.

What is unsupported

We do not say that a night in a measured room improves a guest's health. We say that the room removes stray signals that science knows how to measure.

We do not offer a biological age in one night, nor a longevity score displayed at reception. These promises circulate; they do not rest on sufficient evidence, and they place the hotel in a role that is not its own.

We do not recommend that any hotel build up a file of health data, even with the guest's agreement.

What a hotel can do

Measure its rooms. A few sensors, a reading protocol, one sheet per room. Cost: of the order of a few hundred euros, or a mobile kit. Target gain: knowing where each room stands, and being able to say so.

Publish the readings. At booking, on the door, in the room guide. A longevity room is described by figures, not by adjectives.

Ask no health questions. Before arrival, three preference questions are enough: pillow, temperature, timing. None of them concerns health.

Let the guest measure themselves. Make devices available, against a card pre-authorisation, with a hygiene procedure. The guest keeps their data. The hotel keeps the device.

Payback period: measuring the environment pays off from day one, because it gives the hotel a verifiable argument.

What the Living Lab measures

Measurement planned. The Living Lab, near Lisbon, is being equipped in waves; part of the equipment is being delivered.

The Living Lab will apply the audit protocol to its own rooms: CO2 at night, noise, evening and morning light, temperature, water. The readings will be published here, dated. It will also test the lending procedure for self-measurement devices, from cleaning to return, without any personal data being kept by the venue.

Sources

• Regulation (EU) 2016/679 (GDPR), Article 9, processing of special categories of personal data. EUR-Lex
• IO8, Longevity audit for venues page: no measurement of guests or staff; target values for the longevity room.

Also from the founder

Question 48 · How do you protect health data?

The longevity audit for venues  ·  The Research Journal

IO8 Living Lab, near Lisbon. Measured, never promised.

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