TeTra

Today everyone is rushing to make tracing app. Someone is planning to use GPS, others are planning to use bluetooth. We plan to avoid person tracking. WE WANT TO TRACK TEMPERATURE. And if necessary we will give back to people information about his/her own health status. We will be able to inform nearby people (nearby in statistical meaning) if a person nearby has been hit by some ill (in this case covid19).

So we have decided to compete. We qualify for free hardware so thank you both Nordic and Amazon. We got an nrf52840-DK! And we bought another one plus a dongle. We literally loved this hardware. It has the capability to send info via nfc to your mobile phone. So, we have started to work.

The idea: realize a wearable object that can deliver body temperature information to an nfc reader.

The problem: today a lot of people is moving around without paying attention to its own body temperature. This is bad for both them, the collectivity and the business.

The solution: give an OBJECT to the people that can be activated by a NFC reading, measure the body temperature and send it back.

Why bother to give away an object when I can use a flir/temperature scan and, a facial recognition system? Because privacy is a value and facial recognitions systems are normally costly.

The complete solution: TeTra!

Temperature Tracker.

It is simple:

a) an object that measure body temperature (a bracelet or a ring, or, whatever you like)

b) a 'totem' with an computer (from raspberry pi 0 to notebook) with a nfc reader (proxmark ?). The totem can be manned or unmaned. If you are in a workplace, probably you will install the totem at reception. If you are in a small hamlet/village you will have an abitant that manage the small totem around the place.

c) the central server.

Some histories:

Alice is a farmer, she is returning home and at the center of the village she goes freely to put is bracelet near to the totem. The body temperature and the bracelet id are stored in a db.

Bob is a manager and he is entering in a meeting. Just before he freely walk nearby a totem, that read the body temperature and the object id.

Eve is a mother, and she is going to the market (or supermarket) before entering she shows her 'object' to the totem that read the body temperature and the bracelet id.

So?

now we have at least three totem full of data. These data are anonymous. The bracelet or, the object are freely shown to the totem and anyone can exchange his own object with a friend. So privacy is totally respected.

Now the data can be send to the central server. The central server can be the real central server of the county, or the country or the continental server. The collected data will contains: the totem id, the object id, the measured body temperature, and the date-time of the measured data.

The central server/s will have historically geo related epidemiological information for scientist, government, policy makers. These info (we hope) will be precious to avodi other waves of covid, or, other 'flu'.

Business Model:

the object is for free, and we worked on it only to demonstrate to ourself the concept. There are a lot of paper and project that show how to measure temperature via NFC. There are adhesive tags already sold.

The totem code is free software and so the central server.

We hypothesize a business model that can become profitable by selling both trend data to 'big pharma' and, by selling predictions to local authorities. However in this case, we will prefer a no profit business model based on B corporation that sell anoonymous mathematical models to every pharmaceutical enterprise.

Status: Totem, Central server and nfc reader (both demo with nrf52840 and arduino) are on github.com/gvieri/TeTra (see below), The hardware due to some transportation/supply chain disruption is in breadboard status (and if you try to realize a passive nfc system at 13.56 MHz you looking for some small trouble don't you? ). However we were able to get a Volt from a single NFC request. We are still working on it because this idea likes us very much and we really hope that people will copy/help us. We are are ready to contribute with other people/enterprises/team according to our competences and time.