The PlayBook may not have taken off in the consumer market, but its enterprise-friendly features may help it find a home elsewhere -- especially now that it's packing a speedy 4G radio. Fresh on the heels of the LTE edition hitting Canadian shores, Intergraph has unveiled its Mobile Responder app that turns RIM's slate into a formidable tool for police and other emergency responders. The app taps into the company's Computer Aid
