science

TousAntiCovid

TousAntiCovid is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand TousAntiCovid rather than just read about it. In short: TousAntiCovid (French for Everyone against Covid, and originally released as StopCovid) is a voluntary contact tracing app for monitoring the spread of the COVID-19 pandemic in France. It was first released on 2 June 2020 and is available on Android and iOS smartphones.

Key takeaways

TousAntiCovid belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect TousAntiCovid to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of TousAntiCovid from memory before moving on to harder problems.

Reference excerpt

TousAntiCovid (French for Everyone against Covid, and originally released as StopCovid) is a voluntary contact tracing app for monitoring the spread of the COVID-19 pandemic in France. It was first released on 2 June 2020 and is available on Android and iOS smartphones.

History

Initial release On 8 April 2020, the French government announced that it was working on a contact-tracing app, in co-operation with Inria. The app (as StopCovid) was initially released on 2 June 2020, relying on a centralised contact tracing system (known as ROBERT) instead of the contact tracing system created by Google and Apple. By 22 June, the app had been downloaded 1.8 million times; however, it was rather controversial, with many criticising the potential privacy issues surrounding the ROBERT system.

Re-release as TousAntiCovid Due to the controversies surrounding StopCovid, on 23 October 2020, the French government announced that it would be rebranding the app as TousAntiCovid. In addition to the rebrand, the app would gain several new features, including the ability to see daily case numbers and a news feed. The app later gained more features, including the ability to show the user's vaccination status for check in at venues.

References

External links Official website (in French) TousAntiCovid support website (in French)

Illustrations

Worked examples

Example 1 — a first encounter with TousAntiCovid

Start with the simplest possible case. Write down what TousAntiCovid claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to TousAntiCovid before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about TousAntiCovid ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of TousAntiCovid

In research: TousAntiCovid appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses TousAntiCovid in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: TousAntiCovid is common in secondary-school and first-year university syllabi. It links to neighbouring topics COVID-19 contact tracing apps, COVID-19 pandemic in France, so understanding it makes those chapters shorter.
In everyday life: Look for TousAntiCovid outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study TousAntiCovid in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what TousAntiCovid means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain TousAntiCovid out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is TousAntiCovid in simple terms?

Why does TousAntiCovid matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study TousAntiCovid?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on TousAntiCovid.