Sprint has unveiled kiosks in the lobbies of movie theaters where Sprint customers can scan a code from their phones to get coupons for popcorn and sodas.

The campaign, in 500 theaters across the country, will continue through December, MediaBuyerPlanner writes.

The kiosks ask Sprint customers to text a word to a certain phone number, then send a text message with a string of letters and numbers back to the customer’s phone. The customer holds the phone up to the kiosk’s scanning device, which then scans the code and offers promotions from which the customer can choose and print a coupon.