I happened to see this in Bellevue, Washington today as well. I was in a rush though so I didn't get to stop and look at how it worked. I actually assumed it wa

I happened to see this in Bellevue, Washington today as well. I was in a rush though so I didn't get to stop and look at how it worked. I actually assumed it was just fishing line. It served the correct purpose though of catching my eye in a store where I normally just walk straight past.