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Journalists from around the world descend on Mobile World Congress in Barcelona to see the latest smartphones launch. This year, the limelight was firmly on the Samsung Galaxy S6 and S6 Edge, as well as the HTC One M9.

Away from the flashy stages though are a host of brilliant gadgets and handy accessories. We've pulled together some of our favourites from the Pepcom showcase.

First up, antivirus firm AVG's smart glasses, modelled here by my colleague Rich Trenholm, who was very happy to wear them and even happier to hear I'd used this image as my opening shot.

The glasses are equipped with infrared lights that flash when they detect nearby cameras. Why? The flashes distort the images, saving your face from appearing in unwanted photos. They're a proof of concept for now, but if they attract enough attention we may yet see identity-protecting specs in the future.

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Photo by: Andrew Hoyle/CNET

Visit manufacturer site for details.

This tiny little microSD card, smaller than my fingernail, can hold a simply mind-boggling 200GB of data. Yes, 200GB. Seriously.

SanDisk's latest microSD card will be the must-have accessory for photographers who hate swapping cards or anyone who wants to keep every season of "Power Rangers" stored locally on their phone. I fall into both categories.

Photo by: Andrew Hoyle/CNET

Incredibly, it was only a year ago that SanDisk wowed us with its 128GB microSD card. We wondered then just how much more storage it's physically possible to cram into a tiny sliver of plastic. Now we know.

The card is on sale within the next few weeks and will cost an eye-watering $400 (around £260 or AU$515).

Photo by: Andrew Hoyle/CNET

Samsung took the covers off its latest flagship super phones, the Galaxy S6 and S6 Edge. Case manufacturer Speck was on hand with a range of cases to protect the shiny new mobiles from meeting an early end after a tumble to the ground.

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Photo by: Andrew Hoyle/CNET

The CandyShell Grip, shown here in a variant for the S6 Edge, has grippy rubberised lines to help you hold onto your pricey new phone.

It's on sale in the next month and will cost $35 (roughly £25 or AU$45).

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Photo by: Andrew Hoyle/CNET

Speck in fact has a whole range of colourful cases for the S6, S6 Edge and HTC's sleek new phone, the One M9. These CandyShell models shown here all retail for $35 (again, about £25 or AU$45).

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Photo by: Andrew Hoyle/CNET

The Lynx 3 by Mad Catz is the little brother to the all-metal Lynx 9 the company showed off at CES earlier this year. The Lynx 3 is made from plastic, rather than metal, which has helped it come with a much more affordable $60 (about £40 or AU$80) -- considerably lower than the $300 of the Lynx 9.

It's an Android gaming controller, with folding arms to let you squash it into a pocket, and then unfold for comfortable gaming action.

Photo by: Andrew Hoyle/CNET

The Ultimate Ears MegaBoom is a reasonably compact but surprisingly loud water-resistant Bluetooth speaker. It's available in a range of colours and costs $300, £250 or AU$349.

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Photo by: Andrew Hoyle/CNET

SanDisk also showed off this little chap. It's a storage device that lets you transfer data from your computer using regular USB and has the brand-new USB type C port on the other side. So far, not many phones use USB type C, but we'll see a lot more arriving soon.

Photo by: Andrew Hoyle/CNET

iOS hasn't been ignored by SanDisk. The iXpand can store data from your iPad or iPhone. It has 128GB of storage, so it's a good way of storing movies to watch on a long plane journey without using up your precious internal storage space.

Photo by: Andrew Hoyle/CNET

Case maker Tech 21 also had a range of new cases for both the Galaxy S6 and S6 Edge. These have been made thinner and lighter than previous versions so they don't spoil the overall look of the phones.

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Photo by: Andrew Hoyle/CNET

Nope, not an alien probe: a speaker. And a super impressive one at that. It's made by French firm Deviate and it's called the Phantom.

Unlike traditional speakers, its interior is highly compressed to help it deliver better low-end sound.

Photo by: Andrew Hoyle/CNET

Although it's small, it filled the whole huge room with loud, low-end rumbles. It really was an impressive sound, but that's balanced by its eyewatering 9,000 euro price tag -- that's around $10,100, £6,550 or AU$13,000.

Photo by: Andrew Hoyle/CNET

Mad Catz also had the Surfr to show off. It's designed more for use with smart TVs, rather than just as a gaming controller. The full keyboard will let you easily browse the Web or send brilliant tweets.

It's available for preorder now for £60 (that's roughly $90 or AU$120).

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Photo by: Andrew Hoyle/CNET

Visit manufacturer site for details.

Rich really does look lovely in these identity-concealing specs. What a treasure.

Photo by: Andrew Hoyle/CNET

Polaroid is going back to its printing roots with the Zip. It connects wirelessly to your smartphone and can make quick prints of your snaps.

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Photo by: Andrew Hoyle/CNET

The pictures are rather tiny at 2x3 inches, but can be printed in colour in under a minute.

It's available now for $130 (that's roughly £85 or AU$170).

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Photo by: Andrew Hoyle/CNET

This Wi-Fi-enabled coffee machine sadly isn't a product, you can go and buy, but it is a neat demonstration of how Nordic Semiconductor's tech can add smart features to existing devices.

Photo by: Andrew Hoyle/CNET

Here's the Piper NV home monitoring system. It has a camera, night vision and temperature and humidity sensors for you to track everything going on in your house remotely, using your smartphone.

They cost $269 or 299 euros (that's around £220 or AU$430) each, but you may want several for different rooms in your house.

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Photo by: Andrew Hoyle/CNET

We were very keen on the fitness-tracking Withings Activite Pop smartwatch, but marked it down in our review as it only worked with iPhones.

Now, it's been given a new Android companion app.

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Photo by: Andrew Hoyle/CNET
Editors' Rating

Typical Price: £119.95

Visit manufacturer site for details.

The Ring video doorbell connects to your home Wi-Fi network. When somebody rings it, you'll be able to see on your phone who the person is, before deciding whether to take the call or ignore them.

Never again will you have to make awkward smalltalk with salesmen at the door.

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Photo by: Andrew Hoyle/CNET

This little saucer is the Wezr and it syncs your location to a weather service in order to provide super accurate local weather information, tailored to you.

It costs $99, which converts to around £65 or AU$130.

Photo by: Andrew Hoyle/CNET

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