Gift Guide: Gadgets that make your wrist smarter

If you're looking for a device to track your fitness, alert you to incoming messages and occasionally let you buy stuff with a scan or a tap, there's no shortage of computerized wristwatches to choose from.

Review: Pay-by-phone works, mostly

This week I've been paying for things with my phone, and while I do appreciate the technology, I'm wondering if mobile wallets will take off or fizzle out.

Google debuts mobile-pay service in second try

Google's answer to the Apple Pay mobile-payment service is debuting in the U.S., marking a do-over by the company behind the world's most-used operating system for smartphones.

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