Taco Bell recently lobbied the Unicode Consortium to add a taco emoji to its keyboard. The brand circulated a Change.org petition that's secured 30,000 signatures. So why not create its own emoticons or stickers instead of waiting for the Unicode Consortium to add a taco emoji? "We didn't go create our own app because people use the emojis natively already," explained Taco Bell rep Ashley Sioson. "We want it to be a natural tie-in to how the user already uses emojis.""
Source: AdWeek, 9th March 2015
See the petition here