[There's silence on his end for a moment. He's thinking about something.]

I wouldn't want to put a symbol on them -- there's only so many that can be activated without actually knowing Symbology. Why don't you get me a sketch of what you want the badges to look like and I'll see if I can make something with decent properties?

[Little does he know he's going to be asked by a guy about making another pair of teleporters later in the day.]