Then don't have a funnel, or have enough of them. I've never queued, except for maybe the briefest of moments, to enter an airport building, even though you always have to pass through a "funnel" (aka draft-preventing double doors[1]).

Even the narrow automatic one-way sluice doors[2] increasingly popular as you leave the secure area of an airport only ever seem to cause a queue when some idiot tries to go back, and security has to reset them.

When there's a queue at security/immigration it's because the checkpoint is understaffed (or otherwise under-provisioned), not because there's a checkpoint.

1: http://cdn.kone.com/www.kone.co.uk/Images/49562_Entrance_dou...

2: http://www.recorduk.co.uk/images/getImage?t=product&img=imag...