Virgin tycoon Branson invests in Square

Square, a start-up from a co-founder of Twitter, said Tuesday that Virgin tycoon Richard Branson has invested in the mobile payments company.

BlackBerry to use key technology by Assa Abloy

Assa Abloy AB, the world's leading lock group, said Tuesday it is collaborating with Research in Motion to include key-card technology in upcoming BlackBerry models.

Square streamlines payment via mobile 'tabs'

Square, Jack Dorsey's mobile payments startup, was founded on the idea that it could simplify the way the world pays for goods and services.

Hack turns Square into criminal tool

Hackers have shown how to turn mobile payment service Square into a convenient tool for criminals to pump cash from stolen credit card numbers.

Payment startup Square rolls out iPad sales app

(AP) -- First, mobile payment service Square made it easier for merchants to accept credit cards anytime, anywhere, with just a smart phone and a tiny, plastic credit-card reader. Now the startup led by Twitter co-founder ...

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