In a similar way to Apple's iPhone 5, the main button on the front of the device doubles as a fingerprint² scanner used to unlock the device.

 

The S5, which is water and dust-resistant will be available in April.

 

South Korea-based Samsung, the market leader in smartphone sales worldwide, also claimed to have made the "world's fastest" auto-focusing camera.

 

In addition to two smartwatches announced on Sunday - the Gear and Gear 2 Neo - Samsung also added the Gear Fit, a smartband that is focused on fitness.

 

 

Security has been a major theme at Mobile World Congress in Barcelona. 

 

Earlier on Monday, the Blackphone, made by Silent Circle, was launched. It included a range of specialised security apps offering encrypted communication.

 

And for Samsung, it was security features that provoked applause from those in attendance at its characteristically-flamboyant（艳丽的） launch event at Mobile World Congress in Barcelona.

 

As well as unlocking the device, the fingerprint scanner will be used to power payments. Samsung has partnered with Paypal to offer payment-by-finger.

 

The scanner is also able to enable "private mode", a way of storing sensitive information accessible only by using the scanner.

 

"Consumers already worried about the security of established payment mechanisms³ are likely to view a new technology and process with suspicion," commented Eden Zoller, principal analyst⁴ at Ovum.

 

"On the positive side, Samsung is a hugely popular smartphone brand with global reach, while PayPal is a trusted payments service provider. This is a powerful combination."

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