Miami Beach Mobile wallet AirBitz, which provides a location-based directory to make it easier for users to spend bitcoin, is launching a giveaway promotion at the North American Bitcoin Conference in Miami, Florida.
Airbitz is calling the contest ‘Hidden Bits’, which is a scavenger hunt that will see bitcoin-loaded cards secreted in locations around the Miami Beach area during the conference.
Clues will be released on Twitter to hint at the location of the cards, which will contain QR codes giving finders access […]
