The race to smash linguistic barriers with simultaneous speech-to-speech translation is still wide open, and Japanese mobile operator NTT DoCoMo has just joined Google Translate and DARPA on the track. Whereas Google Translate's Conversation Mode was a turn-based affair when it was demoed back in January, requiring each party to pause awkwardly between exchanges, NTT DoCoMo's approach seems a lot more natural. It isn't based on new technology as such, but brings together a range of existing cloud-based services that rec