The founder of smartphone walkie-talkie app Zello has defended its security credentials, after accusations that Bahraini officials exploited the app to arrest fifteen activists. Human rights group Bahrain Watch has urged people to stop using the app to communicate after fifteen activists were arrested in Bahrain at the start of the month. The activists’ lawyers claim they have since disappeared...Bill Moore, co-founder and chief executive of Texas-based Zello, told the Independent: “The original report was activists in Bahrain had been arrested when an authority invited them to a meeting using Zello.  No app can solve that problem. “Zello is popular with protesters and many users because it can be used without any personal identification.  All other popular messaging apps require confirmation of a phone number or email, Zello does not.”