This month, Las Vegas played host to the annual technology junkie paradise known as CES 2017.

Walking through the doors of this event is like stepping into the future. Attendees get to see things that would have seemed impossible five years ago, and some even seem impossible today.

Here are the three coolest things I saw there.

1. Chameleon televisions. TVs are always a big hit at the CES show, and this year was no exception.

We started years ago with giant tubes that took up half of our living rooms with two channels that had to be changed by hand. Then we moved up to having lots of channels and remote controls.

A few years back, we lost the big tube and became able to have a flat screen that took up much less space.

Now? How about a TV that has all of its working components stored outside the actual TV set itself? 

LG Electronics, Samsung Electronics and Sony have all moved the core working components of their TVs to outside hardware.

For Sony, that means building those components into a sub-woofer that serves as a TV stand. Samsung Electronics houses them in an outside box.

The actual screen is now so thin that it disappears into the wall. The new W7 TV from LG Electronics is all of just 2.5 millimeters thick, skinnier than a person's finger. 

2. Smart glasses that actually look smart. We all remember the rather limp launch of Alphabet's Google Glass. Well, the industry continues pushing forward with augmented and virtual reality glasses.

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One product that made a splash on this front with both Barron's and Wired are AR/VR glasses from Vuzix.

Both publications came away from the tech show touting Vuzix's Blade 3000 Smart Sunglasses product as the class of its field. 

The appeal of the Vuzix product is its combination of functionality and style, according to both publications.

The Blade 3000 runs Android with integrated video and AR overlays that allow users to have cloud-connected entertainment and information everywhere.

Although the Blade 3000 Smart Sunglasses will appeal to retail early adopters, the Vuzix M3000 Smart Glasses for commercial use will appeal to investors. There is little doubt that commercial smart glasses are about to become big business.

Research firm Digi-Capital has estimated that the AR smart-glasses global market will reach $90 billion by 2020.

This is a case of going from zero to 60 in about three seconds because the market for smart glasses was very small this year.

The growth will be driven by businesses, which already ordered 400,000 pairs of smart glasses last year, a number that will soar to 6.6 million by 2020.

The main competitors in the smart-glasses world are Atheer, Microsoft, ODG, Recon Technology, Seiko, Sony and Vuzix. Google closed down its smart glasses production but has invested $543 million in Magic Leap which is also in the business. 

So though Vuzix might have the best product, it clearly doesn't have the deepest pockets, judging by its competitors.

3. A computer that can be carried in a wallet. I have saved the best for last.

A couple of years ago at CES, Intel demonstrated its Compute Stick, which is about the size of a pack of gum and can turn any HDMI television or display into a complete computer.

Inside the Compute Stick was an Intel core processor with wicked fast speed. Basically, it put everything that we love about a desktop computer into a device that fits into the palm of a person's hand.

At this year's CES, Intel unveiled something even smaller and likely more useful: the Compute Card, which has the dimensions and thickness of a couple of credit cards stacked on top of each other. It can be carried in a wallet.

Despite its size, the Compute Card packs an enormous amount of memory. It comes with a Kaby Lake Processor, memory, storage and Wi-Fi.

A Compute Card is inserted into a plain-old dock or monitor, and users have themselves a computer.

Intel will be looking to get manufacturers on point to support the Compute Card. If it does, we are talking smart appliances, kiosks and TVs.

Think of the ease in upgrading a TV with new kinds of apps and processes. Just change out the old Compute Card and pop in a new one.

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.