Best equipment for voice key trigger?

Hi everybody,

I have a hardware question - What equipment, in your opinion, is the best option for the function of voicekey trigger (e.g., having a picture disappear as soon as someone speaks)? Our lab used to have a good quality recorder hooked up to an iolab button box for this purpose. However, the newer OS will no longer support that button box, and we are looking for other options. We have tried using an internal microphone and manually coding the voicekey trigger, but that does not work reliably. What do you do/recommend?

Thanks in advance.