computer science

Junaio

Junaio is a computer 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 Junaio rather than just read about it. In short: Junaio was an augmented reality browser designed for 3G and 4G mobile devices. It was developed by Munich-based company Metaio GmbH.

Key takeaways

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

Reference excerpt

Junaio was an augmented reality browser designed for 3G and 4G mobile devices. It was developed by Munich-based company Metaio GmbH. It provided a Creator application and an API for developers and content providers to generate mobile Augmented Reality experiences for end-users. The smartphone app, for Android and iPhone platforms, and API were free to use. Junaio was the first augmented reality browser which had overcome the accuracy limitations of GPS navigation through LLA Markers (latitude, longitude, altitude marker, patent pending). In May 2015 Metaio and all of the company's products were acquired by Apple. Subsequent to the purchase Junaio web presences were removed, and a planned Metaio conference was cancelled. Junaio and all Junaio channels were deactivated on 15 December 2015.

Overview of the technical infrastructure Within the Junaio app all deployed contents was organized in so-called channels. A channel could be created using the API (REST API) or 3rd party tools like ConnectAR, BuildAR, Metaio Creator, etc. The channels would then be uploaded to the server infrastructure behind the Junaio app, called Metaio Cloud. Users could open/load the available channels inside the Junaio app to get access to the according AR contents and scenarios. The API was based on "AREL" (Augmented Reality Experience Language) which allows scripting of these channels based on common web technologies such as HTML5, XML and JavaScript.

Uses In 2011, during the Occupy Wall Street protests, organizers encouraged the development and use of augmented reality features within the junaio application to supplement physical protests and overcome physical restrictions placed on them.

Worked examples

Example 1 — a first encounter with Junaio

Start with the simplest possible case. Write down what Junaio claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer 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 Junaio 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 Junaio 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 Junaio

In research: Junaio appears in computer 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 Junaio 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: Junaio is common in secondary-school and first-year university syllabi. It links to neighbouring topics Augmented reality, Computer engineering stubs, Computer graphics stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Junaio 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Junaio in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Junaio 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 Junaio out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Junaio in simple terms?

Junaio was an augmented reality browser designed for 3G and 4G mobile devices. It was developed by Munich-based company Metaio GmbH.

Why does Junaio matter?

Because it connects several computer 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 Junaio?

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 Junaio.