We created and launched a social shopping service DUTY FREE BY NIGHT. This WeChat native program is loaded upon arrival at the airport, when travelers connect to the airport’s free wifi. The program is idle during the day but activates at night – between 2am and 6 am – when jetlag keeps Chinese tourists awake. A digital personal shopper guides users through the high end boutiques of the empty airport, and an e-catalogue offers exclusive deals on duty free prices.DUTY FREE BY NIGHT is a WeChat based shopping experience that enables Chinese tourists to leverage their jetlag by shopping when they are awake at night! A digital personal shopper guides users through the high end boutiques of the empty airport, and an e-catalogue offers exclusive deals on duty free prices.