Martyn WilliamsSenior U.S. Correspondent, IDG News Service

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Martyn Williams covers mobile telecoms, security, Silicon Valley, and general technology breaking news for the IDG News Service, and is based in San Francisco.

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Car and pedestrian collision? There'll soon be an app for that

The new system will alert drivers and pedestrians of potential collisions.

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After photo leak, North Korea said to block Instagram

Fire at iconic hotel could be trigger for the country's first known Internet filter.

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Uber driver deemed an employee by California Labor Commission

The company was ordered to reimburse a single driver $4,152, but the decision could completely blow up Uber's business model.

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China is a fast-growing gold mine for Apple

So far in 2015, Apple has sold more iPhones in China than in the United States.

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China, iPhone 6 lead another record Apple quarter

The App Store and Mac businesses saw big increases too.

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Apple Pay rival CurrentC coming in mid-2015

The payments platform operated by major US retailers is testing Bluetooth and barcode technologies.

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Confusion but hope as U.S. faces mobile payment revolution

In six months, new card regulations could usher in greater acceptance of Apple Pay and its competitors.

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Austin declared a drone-free zone during SXSW

Folks don't like drones in Texas, local police chief warns.

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Confirmed: Google plans its own U.S. mobile service

But Google's Sundar Pichai says it doesn't intend to become a full-service cellular carrier, instead likening the service to its Nexus mobile devices.

on pcworld.com

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Samsung to launch Samsung Pay mobile payments system in challenge to Google, Apple

The Android smartphone maker will launch Samsung Pay in the US in mid 2015

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Smartphone thefts plummet after kill-switch introduction

Thefts and robberies of smartphones fell in three big cities with iPhones leading the pack

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With employee help, ID theft ring allegedly stole $700,000 in Apple gift cards

Five people have been indicted in scheme that took advantage of Apple 'instant credit' gift cards.

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New iOS spyware steals pictures, data, and more even from non-jailbroken iPhones

Spyware from a pro-Russian group is targeting iPhones, whether they're jailbroken or not, says Trend Micro

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Apple now neck-and-neck with Samsung after monster quarter

As iPhone 6 propelled Apple, Samsung sales dropped because of competition in China.

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Apple tops Chinese smartphone market for the first time

The popularity of the iPhone 6 helped Apple beat out Xiaomi to become number one in China, according to a market researcher