30,000 people signed a petition to have an official 'Taco' emoji created

"But brands looking to take advantage of this trend need to understand the difference between emojis and emoticons or stickers. The emoji keyboard, which now comes standard on many smartphones, is comprised of various emojis approved by the Unicode Consortium. Brands looking to create their own emoticons and stickers have to make their own apps or partner with messaging apps like Kik, WhatsApp and Facebook Messenger to have their branded emoticons available for consumer use.
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