science

My Friend Cayla

My Friend Cayla 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 My Friend Cayla rather than just read about it. In short: My Friend Cayla was a line of 18-inch (46 cm) dolls which used speech recognition technology in conjunction with an Android or iOS mobile app to recognize a child's speech and perform conversations with users. The doll used the internet to search what the user said, and then responded with data that it found online.

Key takeaways

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

Reference excerpt

My Friend Cayla was a line of 18-inch (46 cm) dolls which used speech recognition technology in conjunction with an Android or iOS mobile app to recognize a child's speech and perform conversations with users. The doll used the internet to search what the user said, and then responded with data that it found online. My Friend Cayla was created by Bob Delprincipe, inventor of Cindy Smart and Tekno the Robotic Puppy. The doll is banned in Germany, since the German government considers it to be a surveillance device.

Technology Cayla functioned by sending microphone inputs to an app on an iOS or Android device via Bluetooth. The app then parsed the speech into text and used keywords from the speech that it heard to search the Internet for a response. The app translates the text back into speech and sends it back to the doll, who answers after around a one-second delay. Cayla, operated by 3 AA batteries, also has a "personality", with a database containing details of her family, pets, her favorite food, pop star, and film. The creator of the doll, Bob Delprincipe, says "She's not a search engine, she's a seven-year-old girl. There are some things she just doesn't know." And he argued that though there had been 'intelligent' toys before, there had never been an Internet-connected doll.

Styles Cayla is available in 3 styles: Blonde, Brunette and African American. The UK saw a limited release of a Princess Edition.

Distribution My Friend Cayla was distributed by Vivid in the United Kingdom. Genesis was the distributor for users from the United States of America.

Awards The doll was named 2014 Innovative Toy of the Year by the London Toy Industry Association, and was a top 10 toy for all key European retailers this past holiday season. The doll was later sold in the United States market in August 2015. In 2015 My Friend Cayla won Most Wanted Dolls of 2015 from TTPM (Toys, Tots, Pets & More).

Controversy Ken Munro of security firm Pen Test Partners claimed he hacked the doll, and demonstrated the hack in the BBC World News Tech Tent program. Tim Medin from Counter Hack also hacked the doll by simply using Bluetooth to use it as a remote speaker and microphone, which could be used to communicate with children. "Cayla was basically the subject of a tech prank," said Peter Magalhaes, general manager of Cayla manufacturer Genesis. In February 2017 the German Federal Network Agency notified parents that they were obliged to "destroy" any Cayla in their possession as it constitutes a concealed espionage device violating the German Telecommunications Act. The agency also considers the Bluetooth device as insecure, allowing connections to Cayla's speaker and microphone within a 10 m (33 ft) radius. The doll has also been criticised by the Norwegian Consumer Council for allowing the use of the collected data from the child's speech for targeted advertisements and other commercial purposes and its sharing with third parties, as well as for hidden advertisements through the doll's positive statements about certain products and services. In the United States, the Federal Trade Commission is investigating similar complaints over whether My Friend Cayla's upload of child speech constitutes an undue violation of privacy. The resulting controversy led to the doll's inclusion in the Museum of Failure in Sweden, where similar failed products and services which were either commercial failures or are controversial in their own right are on display. The Spy Museum Berlin also has a Cayla doll on display, the first toy in its collection of various espionage and surveillance devices. The doll was donated by a German mother who found the doll in her daughter's room after hearing about a government order to destroy the dolls following a ban on its sale and possession.

Worked examples

Example 1 — a first encounter with My Friend Cayla

Start with the simplest possible case. Write down what My Friend Cayla 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 My Friend Cayla 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 My Friend Cayla 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 My Friend Cayla

In research: My Friend Cayla 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 My Friend Cayla 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: My Friend Cayla is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2010s in hacking, 2010s toys, Doll brands, so understanding it makes those chapters shorter.
In everyday life: Look for My Friend Cayla 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 My Friend Cayla in 20 minutes

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

Frequently asked questions

What is My Friend Cayla in simple terms?

Why does My Friend Cayla 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 My Friend Cayla?

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 My Friend Cayla.