Dual Frequency Stickers are combined with NFC and UHF together. It is assembled with EM4423 chip, can achieve long-range distance up to 2.5m with UHF technology. The UHF EPC and NFC may share a common UID in one chip. These dual-frequency stickers are widely used for retail smart posters, coupons, and loyalty systems, UHF purpose is for logistic management or inventory systems.