A Mobile Dial Code (MDC) is a phone number that allows the request and receipt of information directly to a mobile phone.
A Mobile Dial Code combines a toll-free number, a web address and a short code into one simplified number. It is a 2-12 digit string of letters or numbers that is preceded by a combination of * or #.
Mobile Dial Codes are dialed just like a regular telephone number. The caller can be presented with any one of a variety of responses that an advertiser defines - a voice or IVR call, a text message, a video or audio clip, a mobile coupon, game or an application.
A Mobile Dial Code is not the same as an abbreviated dial code which only supports voice calls, basically abbreviating a standard phone number and connecting the caller to a person or machine (interactive voice response system or voicemail system) that answers the call.
A Mobile Dial Code is not the same as a 2D bar code which must be photographed or scanned by a mobile phone camera prior to presenting the caller with a response.
An example of a Mobile Dial Code is **USA (**872) which allows a mobile phone user to download an iPhone application from USA Today with news, sports and weather updates.
The Zoove Corporation operates the National StarStar Registry in the United States leasing StarStar Numbers available through AT&T and Verizon as of July 2010.