Shopify has been steadily improving its iPad-based point-of-sale solution since its launch a couple of years prior, in order to better compete with rivals like Revel, Square, ShopKeep, Vend and many o
<a target="_blank" href="http://www.revelsystems.com/">Revel Systems</a>, an iPad point-of-sale company backed by $3.7 million in funding, is today introducing a new hardware product designed to take