Can I make voice commands/search when phone is locked through inline mic?

Essentially, I would like to avoid having to take my phone out of my pocket when I have my wired earbuds plugged into my phone to make calls or use Google voice search.

Currently when I hold down the "action" button on my inline mic, it says "to do a Google voice search, please unlock your phone". I would like to avoid having to unlock my phone and being able to use Google voice search.

The whole idea here is to be able to use my voice (via inline mic) to unlock my phone and/or use Google voice search without having to pull my phone out and manually entering my password to unlocl.