Craft brewer Saint Louis Brewery, also known as Schlafly Beer, is mounting Bluetooth Low Energy (BLE) beacons on the taps that dispense its beers at businesses throughout St. Louis. The beacons, working in conjunction with the brewery's new Brew Finder app, are intended to catch the attention of customers as they enter bars and restaurants, and to share information with them about the beer on tap. The solution, known as TapTalker, was provided by proximity marketing technology startup Juxtad. Schlafly has installed the beacons at approximately 125 businesses to date. Juxtad began developing its proximity marketing platform and TapTalker beacon in 2014, shortly after its founding that same year. The platform consists of a beer tap beacon, a content-management system hosted on Juxtad's server, and a software development kit enabling data to be shared with consumers via the Schlafly app.