Nothing will raise a retail store owner's blood pressure faster than the sight of deserted aisles during peak shopping hours. If you're stumped as to why your competitors seem to be inheriting your clientele, your sales transaction mechanisms might be partly to blame. Here are some critical questions you should ask yourself when evaluating your merchant services and other shopping technologies. "Can Our Terminals Read EMV Cards?" A quick of review of major Internet security breaches in recent years will reveal several high-profile retail stores whose point-of-sale systems were hacked, exposing a huge amount of private customer data to prying eyes.