I know it only works with the phone charging up which is not a big problem for me. While thinking about it I came with an idea that perhaps some people have already mentioned. Sooner or later they will bring this feature without needing the charger, so my idea is, why don't the use a voice recognition system that you set up so that Siri only gets activated if it recognizes your voice. This will eliminate siri getting activated by anyone around you who dares say those words. Something like touch id but for your voice where you say ''hey siri'' a few times until the device has your voice down. What do you guys think?