I had heard somewhere that SIRI could now recognize your voice, is that true? A friend of mine said Hey Siri while i had my phone open yesterday and it responded to him but not me. Was it just a rumor?
It's true to an extent. I did some testing when this was first introduced.
First you need to set up Hey Siri in the settings using your voice. I recommend trying to use your voice as if you are actually about to ask a question so it's more natural.
When the phone is locked it appears to be the most strict. If you try to manipulate your voice it's very difficult getting Siri to respond.
If the phone is unlocked it's a lot easier. It's also possible for other people to activate it.
That said even when unlocked it doesn't appear to be activated by television/computer as easily. Although it still does on occasion (or at least mine does). That could be because my voice is similar to the tech reviewer I'm watching or something.
This goes both ways for me. Siri not activating to someones 'why so serious joker' impression is a welcome change. However I notice while driving it won't activate for me as easily as it used too. This is a case of you can't have your cake and eat it too.