If you've been doing any travel through airports over the last six months, you've probably noticed an increase in the number of vending machines. Not the kind that dispense cold drinks or chocolate bars, but everything from over-the-counter medicines to expensive electronics. And chances are, those machines were built and designed by Signifi Systems, a Canadian company headed up by CEO Shamir Jaffer. And just wait until you hear where this company plans to take this space in the future.