The adoption of Mobile devices for POS transactions is exploding worldwide as retailers and consumers alike get more accustomed to retailers asking for payment on mobile devices. According to IHL Group, growth of new Mobile POS device shipments is expected to be over 95% worldwide and will surpass 108% growth in North America in 2014.
Locations of items within a store much improved (though unverified). Lowes is very much committed to improving the mobile app and their entire web integration though.
Smartphone penetration is higher in Canada than in the US. Couple that with Chip & Pin overhead at POS and easy to see mobile POS becoming the next standard (and then in US).
The overwhelming presence of antiquated point-of-sale systems and infrastructure is currently preventing mobile from realizing its full potential in-store.