All Trainer classes have overworld or field sprites that sometimes may be used for non-Trainers. Unlike in-battle sprites, overworld sprites may be shared between multiple Trainer classes such as the Ace Trainer overworld sprite, which is shared with Dragon Tamers and Pokémon Rangers in Generation IV. Notable Trainer classes, such as Gym Leaders, have unique sprites between each individual one. Trainer classes can be combined in certain Double Battles ; for example a Crush Girl and a Black Belt can team up to form a Crush Kin ; however, special class names are not created for Trainers involved in a Multi Battle .
The New York Times estimated some 36 million security systems around the . in 2010, which is much less than the number of estimated iPhones . Those stationary security systems are already a low police response priority , due in part to a high rate of false alarms. (In 2011, the Detroit Police Department decided only to respond to burglar alarms after they were verified by the security company .) The problem of false alarms and where and how to direct police resources won’t be made easier by putting panic buttons in millions of phones, especially when considering recent research has found cell phone butt dials might already constitute a huge percentage of 911 calls.