UTC 2014

This May, WWD hosted its C.E.O. Beauty Summit in Miami, bringing 280 executives in the beauty industry to town for a three-day discussion. During networking breaks and between sessions, attendees could charge their devices in the dedicated "refresh and recharge" lounge.

In an effort to promote its news site Patch.com, Ad Week sponsor AOL installed lockers inside New York's TimesCenter in October last year. The station—dubbed the "charging post"—allowed executives to drop off their gadgets for recharging and claim them later.

At the 2012 International Builders' Show in Orlando, phone charging stations positioned throughout the concourse of the Orange County Convention Center also showed videos from the expo's sponsors.

Outside the "Goodnight Gansevoort" lounge—a late-night space hosted by the Gansevoort Hotel Group—attendees of the 2011 Toronto International Film Festival could recharge their electronics in the Best Buy charging zone.

Hashtags that encourage interaction on site through gamification or another kind of activity are sure to facilitate broad interaction online as well. At Target's Feed U.S.A. event, menus encouraged guests to interact and mingle with tablemates through social media prompts on menus.

Staffers are a common sight at events, and some event producers have put hashtags on the outfits worn by greeters, caterwaiters, or even hosts. In February, the South Beach Wine & Food Festival advertised its official Twitter phrase on the T-shirts worn by participating chefs like Rocco DiSpirito.

Livecube users can view and repost tweets from specific sessions, track the points leaders, and see what prizes are available. The app uses game-based strategies to motivate attendee engagement at events.