Apps that help users stay connected.

Apps that help users stay connected. Credit: AFP / Getty Images

What you don't know can hurt you -- if you're trying to win at games that test your knowledge. Whether it's playing an iconic board game or identifying a text-message icon, these apps are made for trivia lovers.

QuizUp

(iOS, Android; free)

This new trivia app has become among the most popular games on both Android and iOS devices. You can compete against opponents from around the world in more than 600 categories. And there are hundreds of subcategories, so if you like music but opera isn't your thing, you can display your knowledge in topics dedicated to Bob Dylan, the Beatles or Bollywood songs. As you win more matches, you unlock titles that can be added to your onscreen avatar.

Jeopardy

(iOS, Android; $1.99)

When Jeopardy made its television debut in 1964, a newfangled "smart" phone was one that had push buttons instead of a rotary dial. The Jeopardy app brings all the features from the long-running TV show to mobile devices, including the famous theme song. You can play against the computer or use pass-and-play mode to challenge friends and family. You can also design and customize the look of your on-screen avatar.

Guess the Emoji

(iOS, Android; free)

As anyone who sends and receives a text message knows, brevity and abbreviations rule. Most texting programs allow senders to use "emojis," icons that indicate emotions or take the place of words. But while everyone would know a "heart" emoji means love, what does it mean if you combine a hot cup of java with a heart that has a crack in it? Answer: coffee break. This app, which plays kind of like "Wheel of Fortune," lets you use your knowledge of emojis and logic to solve puzzles.

Trivial Pursuit

(iOS; $0.99)

Developer Electronic Arts hasn't updated the app version of the classic board game in years, but it is still playable and entertaining. The original game, which was hugely popular in the 1980s, spawned a plotline in a classic Seinfeld episode where a typo causes havoc. There's no "Moops" in the digital version. A separate "master" version is available for iPads ($4.99).


Apple: We can access personal data

Personal data including text messages, contact lists and photos can be extracted remotely from iPhones by Apple employees using previously unpublicized diagnostic functions, the company acknowledged. The same techniques could be used by law enforcement or others, according to a security expert whose findings prompted Apple's admission. Apple maintains the diagnostic functions are for "troubleshooting technical issues" and do not compromise user privacy and security. -- Reuters

EA launches subscription service

EA is launching a Netflix-like subscription service that allows Xbox One owners to binge-play EA games for $5 a month or $30 a year. EA Access will debut with four titles -- FIFA14, Madden NFL25, Peggle2 and Battlefield 4 -- but the software maker says more games will be added. Members can also try out new EA games before they are released.-- PETER KING

Backup plan

Older is wiser when it comes to protecting computer data. A Harris survey commissioned by backup provider Backblaze found 14 percent of men 55 and older and 11 percent of women 55 and older said they backed up their data daily. Fewer than 6 percent of men and women under 55 did daily backups. One-third of all respondents said they back up their data at least once a month.-- PETER KING

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Extra LIRR trains for the big ball drop ... English Regents scores up ... Migrants' plight Credit: Newsday

Latest on congestion pricing ... Fatal stabbing in Massapequa ... Celebrating Kwanzaa ... What's up on LI this weekend

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