Learn the key standards—iBeacon, Eddystone, Bluetooth 4.0, and AltBeacon—and how they work with other proximity technologies. Then build your understanding of the proximity framework and how to identify and deploy the best solutions for your own business, institutional, or consulting needs.Proximity technology—in particular, Bluetooth beacons—is a major source of business opportunity, and this book provides everything you need to know to architect a solution to capitalize on that o...

Sensational eyewitness accounts from the most heroic and legendary American aviators of World War II, never before published as a bookThey are voices lost to time. Beginning in the late 1970s, five veteran airmen sat for private interviews. Decades after the guns fell silent, they recounted in vivid detail the most dangerous missions that made the difference in the war. Ed Haydon dueled with the deadliest of German aces—and forced him to the ground. Robert Johnson ...

Crayons have feelings, too, in this funny back-to-school story -- now a #1 New York Times bestseller!Poor Duncan just wants to color. But when he opens his box of crayons, he finds only letters, all saying the same thing: His crayons have had enough! They quit! Beige Crayon is tired of playing second fiddle to Brown Crayon. Black wants to be used for more than just outlining. Blue needs a break from coloring all those bodies of water. And Orange and Yellow...

NATIONAL BESTSELLER • The first book in an acclaimed graphic novel series, adapted for audio, inspired by the author’s own childhood tells an amazing story of unlikely friends, sisters, and home."Like [Raina] Telgemeier, [Lucy] Knisley has a knack for crystallizing coming-of-age anxieties and social dynamics. City slickers and farm kids alike will enjoy this book (the first in a series)."—The New York TimesJen did not want to leave...

In this Christmas story starring the crayons from the #1 New York Times bestseller The Day The Crayons Quit, Green Crayon is certain that he is the only Christmas color in the box. Of course, Red, White, Silver and even Tan have something to say about that...When Green Crayon claims that green is the only color for Christmas, other crayons let him know that there would be no Christmas without them either. No candy canes or Santa without Red, no sn...