What does this thing actually achieve? (If nothing, that's fine too. It's cute, impressive, etc.) But if it can't actually get you onto wifi networks, it seems

What does this thing actually achieve? (If nothing, that's fine too. It's cute, impressive, etc.) But if it can't actually get you onto wifi networks, it seems like a weird project to spend so much time on. How often does it snag a useable handshake?