As a thermostatic shower mixer, Jaquar Qloud offers perfect regulation over temperature, water flow volume, and shower mode selection
This one, an app called "thisismydigitallife", was a personality quiz, asking questions about how outgoing a person is, how vengeful one can be, whether one finishes projects, worries a lot, likes art, or is talkative.
About 320,000 people took the quiz, designed by a man named Alexsandr Kogan.
Kogan was contracted to do it by a company called Cambridge Analytica, founded by US Republican supporters including Steve Bannon, who would become the strategist for Donald Trump.
Because Kogan's app was circulated via Facebook, it reaped far more than just the information on those who took the test. At the time, in 2015, such apps could scrape up all the personal details of not only the quiz-taker, but all their Facebook friends.
That ultimately became a horde of data on some 50 million Facebook users - their personal information, their likes, their places, their pictures, and their networks.
Marketers use such information to pitch cars, clothes, and vacations with targeted ads. It was used in earlier elections by candidates to identify potential supporters.
But for Kogan and Cambridge it was a much bigger goldmine. They used it for psychological profiling of US voters, creating a powerful database that helped carry Trump to victory in the 2016 presidential election.
The data let the Trump campaign know more than perhaps anyone has ever known about Facebook users, creating targeted ads and messaging that could play on their individual biases, fears and loves - effectively creating a bond between them and the candidate.
The project was based on the work of a former Cambridge scientist, Michal Kosinski, who studies people based on what information they generate on line.
Kosinski and fellow researcher David Stillwell had for several years tapped into Facebook for psychometric profiling using their own personality test app, "myPersonality".
The app accumulated six million test results, along with users' Facebook profiles, and their friends' profiles, in a powerful research database.
In 2015 they published a study carrying the bold title: "Computer-based personality Judgments are more accurate than those made by humans."
They showed, for example, that they could divine a fairly accurate psychometric portrait of a person using only their Facebook "likes".
"Computers outpacing humans in personality Judgment presents significant opportunities and challenges in the areas of psychological assessment, marketing, and privacy," they wrote.
Kosinski would not share the database with Kogan and Cambridge Analytica, reportedly knowing it would be used for a political campaign.
But Kogan created his own app quiz and, through that, amassed the database on 50 million people that would be the backbone of Trump's social media campaign.
Facebook now says Kogan did that illegally. And it has since also restricted apps from such broad data collection on friend networks.
But Cambridge Analytica proved that Kosinski's methods were powerful.
They started with the standard psychological profiling test known as Big Five or OCEAN, which measures five traits: openness, conscientiousness, extroversion, agreeableness and neuroticism.
More simply said, the campaign could put out messages, news and images via Facebook and other social media that was finely targeted to press the right buttons on an individual that would push them into Trump's voter base.
For Trump, it worked.
As a thermostatic shower mixer, Jaquar Qloud offers perfect regulation over temperature, water flow volume, and shower mode selection
The England star smashed nine sixes and eight fours in his 48-ball 108 as the Kings eclipsed the previous record set by South Africa who overhauled a target of 258 by the West Indies in 2023
Fatima was diagnosed with autoimmune hepatitis, a condition where the body's immune system attacks liver cells
The announcement follows a difficult spell for the royal family after both Charles and his daughter-in-law Catherine, revealed that they had cancer
It reiterated that pilgrims require a Haj visa and it can be obtained through recognised official channels
The 18-year-old was taken to hospital in a serious condition
The brothers, who say they are innocent, are accused of having formed an organised criminal network in early 2021 in Romania, as well as in the US and Britain
The left-handed batter scored 3369 runs in 136 one-day internationals and 2893 in 140 Twenty20 internationals — both Pakistan records