Some of the biggest pharmaceutical companies, including Astra Zeneca and GlaxoSmithKline, are investing big in the development of "smart" asthma inhalers that use sensors to track how patients are faring and if they're using these devices properly. To achieve their goal of improving medical outcomes, these firms have announced partnerships with technology vendors ranging from startups like Propeller Health to big brands like Qualcomm. Today, IBM Watson announced that it is throwing its hat into the ring by teaming up with Teva Pharmaceuticals, a drug maker with a large respiratory portfolio including a "smart" inhaler it acquired last year.