In-store marketing is becoming an important way for marketers to reach customers as more than 70% of purchases are unplanned and made in stores. Various in-store marketing techniques include digital signage, displays on shopping carts and hanging from the ceiling. Research shows that ads seen in stores are more likely to cause immediate sales or brand switching than ads seen elsewhere. Major companies like Walmart, P&G, and Pantaloon are increasingly utilizing in-store marketing, which can account for 4-6% of total store sales in China and 15% of mall revenue in Mumbai. In-store marketing is becoming a significant revenue stream for many retailers.