Copyrighted imageCredit: Floriano27 | Dreamstime.com Bingo cards This week, we hear from three people in the avant garde of the global gambling industry, which is said to be worth $417 billion. With smartphone and tablet technology driving a revolution in the way that people gamble, will old-fashioned betting shops and bingo halls survive? And can gambling companies really keep expanding despite recession, competition from the black market and prohibition in emerging economies?

In the studio this week are:

• Norbert Teufelberger, CEO of the online gaming company bwin.party
• Melissa Blau, Director of the consultancy iGaming Capital
• Juergen Reutter, Director of Mobile at the bookmaker William Hill.

This edition of The Bottom Line is first broadcast on BBC Radio 4 on Thursday 31st January 2013 at 8.30pm. Versions will also be broadcast on BBC World Service, BBC World and BBC News Channel. To find out more, or to listen online where available, pelase visit bbc.co.uk.