Haha, you have a valid point - slightly easier than a kid yelling "DAD, WHERE ARE YOU?" in a store... I was thinking about that, and thought about adding an "advanced options" tab that will open up a few additional items, like: what color shirt are you wearing? different time limit (preset @ 30min right now) etc.,

The problem is trying to keep it very minimalist and simple though while throwing all those options in the loop

Why not a simple "Tell them how to find you" field, and let the user type in their own quick criteria.

"Ask the person behind the counter for me, they know me", "sitting in the comfy armchair by the door with my laptop and xyz headphones on"

seems like it would stay pretty simple that way.

I like that, does make it easier than a specific like shirt color