The document outlines 5 of the biggest retail tech trends for 2022: 1) Cashierless shopping using cameras and sensors to automatically bill customers, 2) Experiential retailing using technology to enhance the in-store shopping experience, 3) Autonomous delivery services using drones and robots to deliver items, 4) Social and omnichannel commerce providing coordinated shopping experiences across online and offline channels, and 5) Resilient and secure retail using technology to improve security, trace supply chain disruptions, and build redundancy.