Excited by the fingerprint scanner on the new iPhone? Well not to panic you, but one security has warned that whether or not the device can be hacked, owners of devices definitely can be.

Thieves have mutilated victims to gain access to phones equipped with a fingerprint reader, an expert has warned. By chopping off their fingers.

Marc Rogers, intelligence expert and current Principal Security Researcher at Lookout Mobile Security, said the sensors can provide a convenient way to unlock gadgets while also boosting security.

But they have led criminals to commit increasingly brutal robberies and even chop off phone-owners' fingertips, he said.

Fraudsters have also succeeded in lifting and duplicating prints with technology that "is only going to improve with time", he added.

"Thieves in some regions have worked out that you can force a victim to unlock a secured device, and in some extreme cases have also mutilated victims in order to steal their fingerprint."

The hi-tech scanners are said to work best when combined with a pin code or another security feature.

"Fingerprints can be a useful addition to security but their value depends highly on the type of fingerprint reader and how it is being used - for example, the best use of a fingerprint is to provide a convenient way to unlock something in a medium to low security scenario," Rogers said.

"Unlocking a device with a fingerprint, if done right, can be much more convenient than entering a pin code multiple times a day."

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  • iPhone 5S

  • iPhone 5S

  • iPhone 5S

  • iPhone 5S

  • iPhone 5S

  • iPhone 5S

  • iPhone 5S

  • iPhone 5C

  • iPhone 5C

  • iPhone 5C

  • iPhone 5C

  • iPhone 5C

  • iPhone 5C

  • iPhone 5C

  • iPhone 5C

  • Apple Introduces New Two New iPhone Models At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5S during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched two new iPhone models that will run iOS 7. The 5C is made from a hard-coated polycarbonate and comes in five colors. The 5S comes in three colors and contains an A7 chip. (Photo by Justin Sullivan/Getty Images)

  • Apple Introduces New Two New iPhone Models At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5S during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched two new iPhone models that will run iOS 7. The 5C is made from a hard-coated polycarbonate and comes in five colors. The 5S comes in three colors and contains an A7 chip. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing Phil Schiller speaks about security features of the new iPhone 5S during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched two new iPhone models that will run iOS 7. The 5C is made from a hard-coated polycarbonate and comes in five colors. The 5S features a fingerprint sensor, has an upgraded camera, and contains an A7 chip (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing Phil Schiller speaks about security features of the new iPhone 5S during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched two new iPhone models that will run iOS 7. The 5C is made from a hard-coated polycarbonate and comes in five colors. The 5S features a fingerprint sensor, has an upgraded camera, and contains an A7 chip (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing Phil Schiller speaks about security features of the new iPhone 5S during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched two new iPhone models that will run iOS 7. The 5C is made from a hard-coated polycarbonate and comes in five colors. The 5S features a fingerprint sensor, has an upgraded camera, and contains an A7 chip (Photo by Justin Sullivan/Getty Images)

  • Phil Schiller, Apple's senior vice president of worldwide product marketing, speaks on stage during the introduction of the new iPhone 5c in Cupertino, Calif., Tuesday, Sept. 10, 2013. (AP Photo/Marcio Jose Sanchez)

  • Phil Schiller, Apple's senior vice president of worldwide product marketing, speaks on stage during the introduction of the new iPhone 5c in Cupertino, Calif., Tuesday, Sept. 10, 2013. (AP Photo/Marcio Jose Sanchez)

  • Phil Schiller, Apple's senior vice president of worldwide product marketing, speaks on stage during the introduction of the new iPhone 5c in Cupertino, Calif., Tuesday, Sept. 10, 2013. (AP Photo/Marcio Jose Sanchez)

  • Phil Schiller, Apple's senior vice president of worldwide product marketing, speaks on stage during the introduction of the new iPhone 5s in Cupertino, Calif., Tuesday, Sept. 10, 2013. (AP Photo/Marcio Jose Sanchez)

  • Phil Schiller, Apple's senior vice president of worldwide product marketing, speaks on stage during the introduction of the new iPhone 5s in Cupertino, Calif., Tuesday, Sept. 10, 2013. (AP Photo/Marcio Jose Sanchez)

  • Phil Schiller, Apple's senior vice president of worldwide product marketing, speaks on stage about the camera quality during the introduction of the new iPhone 5s in Cupertino, Calif., Tuesday, Sept. 10, 2013. (AP Photo/Marcio Jose Sanchez)

  • Donald Mustard, CEO of Epic Games, speaks on stage during the introduction of the new iPhone 5s in Cupertino, Calif., Tuesday, Sept. 10, 2013. (AP Photo/Marcio Jose Sanchez)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5S during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched two new iPhone models that will run iOS 7. The 5C is made from a hard-coated polycarbonate and comes in five colors. The 5S comes in three colors and contains an A7 chip. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5S during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched two new iPhone models that will run iOS 7. The 5C is made from a hard-coated polycarbonate and comes in five colors. The 5S comes in three colors and contains an A7 chip. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5S during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched two new iPhone models that will run iOS 7. The 5C is made from a hard-coated polycarbonate and comes in five colors. The 5S comes in three colors and contains an A7 chip. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5C during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched the new iPhone 5C model that will run iOS 7 is made from hard-coated polycarbonate and comes in various colors. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5C during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched the new iPhone 5C model that will run iOS 7 is made from hard-coated polycarbonate and comes in various colors. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5C during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched the new iPhone 5C model that will run iOS 7 is made from hard-coated polycarbonate and comes in various colors. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Worldwide Marketing at Phil Schiller speaks about the new iPhone 5C during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company launched the new iPhone 5C model that will run iOS 7 is made from hard-coated polycarbonate and comes in various colors. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Software Engineering Craig Federighi speaks about iOS 7 on stage during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company is expected to launch at least one new iPhone model. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Software Engineering Craig Federighi speaks about iOS 7 on stage during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company is expected to launch at least one new iPhone model. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Software Engineering Craig Federighi speaks about iOS 7 on stage during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company is expected to launch at least one new iPhone model. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Software Engineering Craig Federighi speaks about iOS 7 on stage during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company is expected to launch at least one new iPhone model. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple Senior Vice President of Software Engineering Craig Federighi speaks about iOS 7 on stage during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company is expected to launch at least one new iPhone model. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple CEO Tim Cook speaks on stage during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company is expected to launch at least one new iPhone model. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple CEO Tim Cook speaks on stage during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company is expected to launch at least one new iPhone model. (Photo by Justin Sullivan/Getty Images)

  • Apple Expected To Introduce New iPhone At Product Launch

    CUPERTINO, CA - SEPTEMBER 10: Apple CEO Tim Cook speaks on stage during an Apple product announcement at the Apple campus on September 10, 2013 in Cupertino, California. The company is expected to launch at least one new iPhone model. (Photo by Justin Sullivan/Getty Images)

  • Members of the media and Apple employees wait outside Apple headquarters before a new product announcement on Tuesday, Sept. 10, 2013, in Cupertino, Calif. (AP Photo/Marcio Jose Sanchez)

  • An unidentified Apple employee, in yellow, waits to assist members of the media before a new product announcement at Apple headquarters on Tuesday, Sept. 10, 2013, in Cupertino, Calif. (AP Photo/Marcio Jose Sanchez)

  • iPhone Event

  • A journalist takes a photo of Apple's new plastic iPhone during a media event held in Beijing, China, Wednesday, Sept. 11, 2013. For the first time since introducing the device that has reshaped technology and culture, Apple will offer two distinct versions of its latest iPhones - a cheaper model made of colorful plastic and another one that aims to be "the gold standard of smartphones" with a faster processor, fancier camera and fingerprint scanner for better security. (AP Photo/Ng Han Guan)

  • A journalist takes pictures of the new plastic iPhones during a media event held in Beijing, China, Wednesday, Sept. 11, 2013. For the first time since introducing the device that has reshaped technology and culture, Apple will offer two distinct versions of its latest iPhones - a cheaper model made of colorful plastic and another one that aims to be "the gold standard of smartphones" with a faster processor, fancier camera and fingerprint scanner for better security. (AP Photo/Ng Han Guan)

  • Members of the media review the new iPhone 5c during a new product announcement at Apple headquarters on Tuesday, Sept. 10, 2013, in Cupertino, Calif. Apple’s latest iPhones will come in a bevy of colors and two distinct designs, one made of plastic and the other that aims to be “the gold standard of smartphones” and reads your fingerprint.(AP Photo/Marcio Jose Sanchez)

  • Members of the media review the new iPhone 5c and 5s during a new product announcement at Apple headquarters on Tuesday, Sept. 10, 2013, in Cupertino, Calif. Apple’s latest iPhones will come in a bevy of colors and two distinct designs, one made of plastic and the other that aims to be “the gold standard of smartphones” and reads your fingerprint.(AP Photo/Marcio Jose Sanchez)

  • Members of the media review the new iPhone 5c during a new product announcement at Apple headquarters on Tuesday, Sept. 10, 2013, in Cupertino, Calif. Apple’s latest iPhones will come in a bevy of colors and two distinct designs, one made of plastic and the other that aims to be “the gold standard of smartphones” and reads your fingerprint.(AP Photo/Marcio Jose Sanchez)

  • Members of the media review the new iPhone 5c and 5s during a new product announcement at Apple headquarters on Tuesday, Sept. 10, 2013, in Cupertino, Calif. Apple’s latest iPhones will come in a bevy of colors and two distinct designs, one made of plastic and the other that aims to be “the gold standard of smartphones” and reads your fingerprint.(AP Photo/Marcio Jose Sanchez)