Dominos Pizza is launching a tweet-to-order service in the US which makes it possible to order a pizza over Twitter with a hashtag – or even just an emoji.

If customers log into the Dominos site and pair it with their Twitter profile, then select an Easy Order pizza, they can place that order by tweeting #EasyOrder to the @Dominos account.

From 20 May, the service will get even simpler, adding the ability to order by tweeting the Dominos account using the pizza emoji. Dominos promoted the launch on Twitter with a day of tweets consisting entirely of the pizza icon and punctuation.

…@ , @ ?

— Dominos Pizza (@dominos) May 12, 2015

The tweet-to-order service is currently limited to the US – when asked, a spokesperson for Dominos UK business told Mobile Marketing: “We’re really excited to see our Domino’s colleagues in the US take their ordering service to the next level. Here in the UK, we pride ourselves on being at the cutting edge of digital innovations so watch this space.”

Being able to order with emoji might seem like a gimmicky stunt – and it probably is – but it might also be indicative of the way mobile ordering is headed on smartwatches, where the displays are much smaller and input is limited.