Martyn WilliamsSenior U.S. Correspondent, IDG News Service

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

PCWorld News

Samsung expects big drop in first-quarter profits

The company is battling fierce competition at both ends of the smartphone business

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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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Radical new battery could reduce phone charging to just one minute

Stanford researchers say the aluminium-ion battery is safer and cheaper than lithium ion.

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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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Thousands comment on proposed drone regulations

The FAA is accepting public comments until late April

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EPIC appeals to court for FAA drone privacy rules

The organization wants a court to force the FAA to come up with privacy regulations concerning drones.

PCWorld News

US trade body to investigate Apple after Ericsson complaints

The case is part of a growing spat between the two companies on LTE patents

PCWorld News

US offers rewards for fugitive Russian cybercriminals

The two suspects are wanted for their alleged roles in operating an ID theft and hacking site

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PayPal cited for 'reckless disregard' of U.S. sanctions

The company will pay $7.7 million for violations of terrorism, WMD, Iran and Cuba sanctions.

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New York threatens action if RadioShack sells customer data

Bankruptcy sale is said to include millions of customer names and addresses.

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Amazon blasts FAA on drone approvals, regulations

Amazon's drone was already obsolete when it got FAA approval.

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Stanford breakthrough could make better chips cheaper

A new process reduces the cost of making gallium arsenide chips and solar cells.

PCWorld News

FAA unclips wings of commercial drones

Blanket airspace clearance aims to cut a hurdle in drone operations

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Android's smart lock now detects when you carry your phone

The new feature, which locks your phone when it's no longer on your person, began appearing on phones on Friday.

PCWorld News

California bill would clamp down on AirBnB tax evaders

Proposed bill would also prohibit rentals in cities that have banned them