In most companies, it’s a fact of life that tablets are
increasingly everywhere — from boardrooms to the production floor. While
tablet technology has been spurring collaboration and data capture, one area
where technology hasn’t caught up is presenting tablet images on the “big
screen” in most conference rooms. Despite innovations in everything
from video conferencing to display technology, most conference rooms I’ve
encountered around the world still provide little more than the 1980’s vintage
15-pin VGA connector.

Most meetings exchange digital
content, so it’s a wonder that displaying information or sharing documents tends
to involve the “projector cord shuffle,” followed by a few minutes of
admonitions as to the correct key combination to enable the projector. Modern
tablets and laptops are also abandoning the bulky VGA connector in favor of
HDMI or mini-HDMI connectors, or even a complete lack of display connectors in
the case of the popular iPad, which requires a dongle to even work with a
projector or conference room flat screen.

What we’re missing

Despite a few stopgap attempts that I’ll discuss below, no
one has come forward with an easy, cheap, common, and retrofittable solution
that allows laptops and tablets to readily connect to a projector. This
solution should be wireless and ideally use some sort of broadcast technology
that allows devices to easily find the projector and connect with a minimum of
hassle. Intel and other players have incorporated wireless display technology
into some of their laptops, and a few tablets have similar technology, but finding a conference room that’s equipped with one of these technologies is frustratingly
rare. A $20-50 device that plugs into an existing projector or television and
easily enables wireless display connectivity seems like it would be an instant

What we have

The current market for wireless display sharing,
particularly with tablets, is rather fragmented, with most of the solutions
coming from the consumer space, reflecting the consumer-oriented nature of the
major tablet platforms. Here are a few of the options:

Apple AirPlay:
Apple’s solution to wireless display sharing comes in the form of AirPlay, an
Apple-specific standard embedded into their iOS and Mac OS laptops that allows
sharing video to the company’s Apple TV device. While the Apple TV is
relatively small and unobtrusive, its $99 price tag and Apple-specific nature
limit its appeal. Software is available to allow Windows PCs to share their
screens to an Apple TV, so if you’re in a primarily Apple-based environment and
willing to spend an extra $100 on each conference room, AirPlay is relatively
user-friendly and easy to set up.

Google Chromecast:
Google’s $35 device initially seems like a winner. The device is only a bit
bigger than a USB memory stick and plugs directly into a TV’s or projector’s
HDMI port. Content can be streamed relatively easily from a browser, but the
list of caveats reduces the appeal of Chromecast at the moment. The device
currently supports only the Chrome web browser and limits its streaming to the
confines of the browser, so you can simply “share your screen.”

Miracast: Miracast
has been tagged as the “AirPlay killer,” an unfortunate moniker that’s
generated vendor strife and befuddled consumers. Miracast essentially delivers
a wireless monitor cable, sending audio and video to a Miracast device in the
same manner as you’d get by connecting a physical VGA or HDMI cable. This has
good and bad points; you can share exactly what’s on your screen, but you can’t
“fling” different content like movies to the screen while performing a
different activity on the computer itself.

Furthermore, Miracast has been marred by internecine warfare
among the various vendors that claim to support the standard, several of them
applying vendor-specific names to Miracast or only partially supporting the
standard, which ultimately prevents broader adoption.

Other screen-sharing solutions

Several other consumer devices, like the Xbox and various
streaming devices, claim to support some level of screen sharing. The popular
Roku device, for example, claims Miracast support is “coming soon.” With many
of these devices hovering around $100, it may be worthwhile to consider these
consumer-style units, since they offer video playback and screen sharing, plus they provide a relatively low price point to do some initial testing in your own

With such a proliferation of wireless technologies and
mobile devices, it’s fairly surprising that the battered blue VGA cable remains
the method of choice for displaying content from a mobile device. Hopefully, the
somewhat fragmented and proprietary market for wireless display sharing will
mature and, with its current focus on the consumer, enterprises may benefit
from its rapid evolution and commodity pricing.

How do you provide screen sharing with tablets and laptops in conference rooms in your organization? Share your experience in the discussion thread below.