Hi Julian,
If they are using the web version in chrome, it may be possible for them to use a 3rd party chrome add-in for speech recognition. I have not tried this, which is why I say it may be possible. We had an agent trying to use a third party grammar program and it would not work properly with the way the input fields for chat were coded.
Looking at some of the addins, they let you right click on the text field and start your speech recognition from the menu.
Thanks,
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Daniel McLeod
Qsect LLC
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