Nearly two in three shoppers would like to receive targeted offers in-store on their mobile phone. A study of of 1,000 shoppers by Savvy Marketing revealed that a similar near two in three (64%) found receiving offers on their mobile appealing. The big brands such as Tesco and Sainsbury's are trusted by more than two in three (68%) to deliver vouchers and loyalty schemes, such as Nectar, are accepted by more than half of shoppers (58%). Only 17%, however, gave the thumbs up to receiving mobile vouchers via Groupon.