Pharmacy and retailer CVS Caremark Corp. is expanding its beacon program, and it’s using a new tool from search giant Google Inc. to reach even more shoppers. Google recently announced it is allowing businesses, including retailers, to send smartphone alerts to consumers via Google Play, which is the preinstalled app store app on Android devices. The program is called Nearby, which Google announced in its official Android blog last month. CVS is one of the first businesses testing Nearby. The program is meant to make it easier for consumers to discover apps and websites that are relevant to them based on their physical location, a Google spokesman says.