As the holidays draw to a close, tech companies are already busy preparing for Christmas 2014. The Consumer Electronics show, held annually in Las Vegas, provides an opportunity for technology retailers to showcase the products they hope to have on the market by the end of the second quarter. This year smart technology dominates the show, including internet-connected cars, integrated home appliances and digital health products. 3D printers, which are still at the stage of consumer experimentation, will be available for as little as $499. CES has come a long way from the videocassette recorder, which launched there in 1970.