Mobile World Congress 2014
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Google Glass: The weird and wonderful apps on offer

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Facial recognition

"Don't be a stranger," is the slogan for NameTag, an app that allows users of Glass to capture images from their live video and scan them against photos from social media and dating sites, according to its press release.

Released in December, the beta version of the app uses utilizes some of the most accurate facial recognition software in the world, according to developers FacialNetwork.com.

"NameTag can spot a face using Google Glass' camera, send it wirelessly to a server, compare it to millions of records and in seconds return a match complete with a name, additional photos and social media profiles," it said in the press release.

(Read More: Virgin Atlantic staff don Google Glass)

The technology would allow the scanning of profile photos from dating sites such as PlentyOfFish.com, OkCupid.com and Match.com, it says, and even allow users to scan photos against more than 450,000 entries in the National Sex Offender Registry and other criminal databases, it added.

"I believe that this will make online dating and offline social interactions much safer and give us a far better understanding of the people around us," said NameTag's creator Kevin Alan Tussy in the release.

Chris Jones, analyst at Canalys can see the clear benefits of this app but told CNBC that it would be seen as "a little bit creepy" despite the creativity behind its development.