Macworld-iWorld Expo 2012: Top 10 Coolest Gadgets You Must See [PHOTOS]

The Macworld-iWorld Expo kicked off on Thursday at the Moscone Center in San Francisco, with hundreds of hardware manufacturers and software publishers jostling for the attention of Apple Inc. aficionados.

Although the absence of Apple at the trade show was felt -- along with that of the company's anticipated iPad 3 -- Apple fans still made it there in hordes.

Start the slideshow to check out the coolest gadgets being showcased at the Macworld-iWorld Expo 2012.

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MUST READ - MacWorld-iWorld Expo 2012: Top 10 Must-Have Gadgets, Software and Apps (PHOTOS)

The Macworld- iWorld Expo kicked off on Thursday, at Moscone Center in San Francisco, with hundreds of hardware manufacturers and software publishers jostling for the attention of Apple fans. Guess what are the coolest gadgets showcased at the iFan event?

Sanho Corp. showcased HyperDrive iFlashDrive, the world's only USB Flash Drive for iPad, iPhone , and Mac/PC, at the MacWorld-iWorld Expo 2012.

The USB Flash Drive is unique in the sense that it not only connects to any PC/Mac, but also it can connect to an iPhone, iPad or iPod Touch as well. This unique product makes it extremely easy to transfer data between your iDevices and Mac/PC.

Using the iFlashDrive app, which is available in the Apple App Store, one can also access the content in the iFlashDrive and listen to music, watch videos, etc. on the iDevice.

The iFlashDrive has been around in the market for about nine months and can only purchased from the online store www.hypershop.com. The iFlashDrive comes in three sizes- 8GB, 16GB, and 32GB- and carry a price tag of $99.95, $149.95 and $199.95 respectively.

Scosche myTrek is a wireless pulse monitor that can connect to your iPad Touch or iPhone without the need of any bulky chest straps or wires. The device works with myTrek app wirelessly. The app displays real time pulse, target training zone, calories burned, and more. The app can also help you customize your training sessions, map your workout with improved GPS accuracy and control your music library. The Li-Ion battery provides up to five hours of work out time.

The device, which was awarded 2012 Innovations (Design & Engineering Showcase Honors) at CES 2012, is retailing for $129.99.

There are many waterproof cases available for iDevices. However, what sets DryCASE apart from the rest, is its rugged build and superior quality.

DryCASE cases are guaranteed waterproof up to 100 feet and can be used for any water related activities ranging from swimming, fishing and kayaking, to water skiing and diving. The waterproof case for phone/camera retails for $40 while the waterproof tablet and e-reader case retails for $60.

Besides waterproof cases, the company also sells waterproof headphones, sports belt and more.

If your laptop looks like either of the ones in this photo, and you have given up hope of recovering your priceless data, well, don't fret. For over 20 years, DriveSavers has been successfully recovering data from hard drives and other storage media that have crashed, been physically damaged, mechanically failed, infected by viruses, and worse.

The data recovery service provider has developed proprietary techniques at its advanced facility to recover the data and make sure that it is safe and sound.

Besides being the only certified secure data recovery service in the industry, DriveSavers also provides the fastest and most reliable service as many celebrities like Milla Jovovich, and organizations like Apple, NASA and Boeing, will happily vouch for.

Though TouchRetouch and AntiCrop do not qualify as gadgets, they are so cool, we've added them to this list. These two $0.99 apps by ADVA SOFT can help you remove unwanted content from your photos (TouchRetouch) and help you uncrop your photos (AntiCrop). The best thing about these two apps is that they work on any iDevice.

So the next time, you want to remove annoying people/objects from your near perfect photos, or want to add extra scenery to your photos, you know what to do.

Agent HD is the world's first USB HD PTZ video conferencing camera that can be used with any Mac/PC, without the need for PCI cards or additional hardware.

With the multi-function IR remote control unit, you can remotely operate the pan/tilt (to capture images of up to 300 degrees horizontally and 180 degrees vertically) and the patented FPF Focus system (to focus on your subject faster). The 12x optical zoom is an added bonus.

The best thing about Agent HD is that it has a price tag of only $999, which is about $200 less than its nearest competition, Sony EVID100. The camera will begin retailing from early February.

iBallz may be goofy-looking but it's more useful than you think. The harness with foam rubber balls at four ends, is the ultimate drop protection for your tablet without adding weight to or concealing the device.

iBallz not only protects the tablet from the accidental drops and spills, but also can be used to hang the device like a picture frame. It can also be oriented into the perfect tilted typing position.

iBallz comes in two sizes and can be fitted on most tablets, ranging from the iPad to Kindle Fire. The harness carries a price tag of $20.

Silent Frisco headsets enable performances in publish spaces where there are severe legal limitations are imposed on noise level.

The custom-made "silent" wireless headphones allow you to enjoy music and hold parties or conferences without disturbing the neighbors.

The Silent Frisco headsets operate on an independent, FCC-approved mid-frequency AM range radio channel, and have been design to provide audio clarity and volume. The wireless headset has two audio channels, and it can work up to 35-50 feet away from the source of audio transmission.

For more information, click here.

Lark is a wearable silent alarm clock and personal sleep coach. Together with the Lark app, the device promises to help the user sleep better and wake up more refreshed.

The device has become a hit in the U.S. market, because it does not disturb the sleeping partner with any loud sound. Rather, it gently persuades the user to wake up by delivering vibrations.

The Lark Personal Sleep Coach app, available for download in the Apple Store, helps the user understand what type of sleeper he is and guides him to improve it in the simplest and easiest ways for him.

The Lark Silent Alarm Clock and wireless sleep tracker come with a dock that can charge both the iDevice as well as the silent alarm clock at the same time. The price tag is $99.

And for $60 extra, the Lark Pro can be purchased for a richer set off tools to help the user to sleep better.

The iKeyboard is an ultra-light (less than 6 oz.) and ultra-slim, portable keyboard for the iPad, whose clear touch-capacitive keys allows the user not only to see the virtual keys beneath, but feel them too.

The best thing about iKeyboard is that it's ultra-cheap (only $35) too and does not need any batteries!