Why is Airlock slow to lock the screen when I walk away?

To help conserve energy for your computer and iPhone, Airlock throttles itself down depending on your recent movements. But while this does improve Airlock's efficiency, it can lead to delays before Airlock notices that you've gone out-of-range of your computer. You can change this behavior by adjusting the responsiveness slider in the "Advanced" tab of the Airlock preference pane. Be aware, though, that increasing the responsiveness can cause your iPhone's battery to drain quicker.