[This post has been revised thanks to Debra Kaufman’s comment below]
The Mobile Digital TV space has a few platform players (ATSC-MH, FLO, MobiTV, etc.), and a couple of the competing formats had displays only a few hundred feet apart in the Central Hall.

FLO TV devices come in a variety of configurations, from in-dash to handheld.
FLO TV (owned by Qualcomm) has been up and running for about four years, offering a channel package not unlike that of basic cable, available over the air on the channel 55 frequency, which Qualcomm spent the past five years buying up in major markets. FLO TV itself has been on the air for about four years, providing mobile TV to select phones on the Verizon, VCast and AT&T platform.
At CES, FLO TV unveiled its own device, the FLO 350 (so named because the screen is a diagonal 3.5-inches). The first generation FLO 350 has a bright screen and excellent audio, though there was a bit of motion blur to the native 320x240p image.
The Qualcomm-owned company is selling its mini-TV for $249 at Best Buy, Radio Shack and Amazon, which will include a six month subscription to the signal, which will thereafter be billed in the area of $19.95 per month for content including ESPN, Nickelodeon, Fox, Disney, ABC, NBC, CBS and many others. Manufacturers like Audiovox and Advent offer in-dash FLO displays for the car.
If the crowd activity at the FLO TV display – part of the Wireless Mobility Brought to You By Qualcomm “Techzone” – is any indicator, interest in mobile digital is high.