Aw man I just had an idea for an app; something where you can crowdsource people in line, how long the line is, how fast it's moving, etc!
Looks like it's been done:
http://timeinq.com/
EDIT: Hm, that one isn't available in Canada on iOS, and the Android one isn't compatible with any of my devices (uh, Nexus 4???), and doesn't have much.
Seems like an app that could be extremely popular. There was another one specifically for iPhone line-ups but Apple isn't approving it.
http://miegoapps.com/miqueue/
http://www.cnet.com/news/apple-bars-...rom-app-store/