SAN FRANCISCO--(BUSINESS WIRE)--talech, a market leading tablet-based point-of-sale (POS) solution for small and medium businesses, today launches talech Premium, which brings advanced features and high-touch support for restaurants, complex retail, franchises and chains. talech Premium will be offered in partnership with Boomtown, a company that provides on-demand IT support for local businesses. “Traditional POS systems are expensive, hard to maintain, and often come with uneven tech support,