The　conventional　luminescent　materials　used　in　the　anticounterfeiting　field　generally　exhibit　unicolor　output　and　a　single-wavelength　excitation　mode,　resulting　in　a　poor　anticounterfeiting　effect.　Herein,　we　successfully　achieved　a　new　transparent　SrAl2O4:Eu2+,Dy3+/CaAlSiN3:Eu2+　phosphor-in-glass　(PiG)　with　dynamic　luminescence　color　variation　from　red　to　yellow　in　hundreds　of　seconds　during　the　ultraviolet　lamp　irradiation　and　green　persistent　luminescence　(PersL)　after　ceasing　excitation.　Additionally,　the　prepared　PiG　owns　excitation　wavelength-　or　doping　weight　ratio-dependent　color-tunable　luminescence.　As　a　proof-of-concept　experiment,　the　specially　designed　SrAl2O4:Eu2+,Dy3+/CaAlSiN3:Eu2+　PiG　based　flower　patterns　exhibit　dynamic　luminescence　color　variation　under　a　simple　ultraviolet　lamp,　and　can　be　observed　for　quick　discrimination.　This　work　exploits　a　new　perspective　for　the　design　of　dynamic　multicolor　anticounterfeiting　materials.　©　2023　The　Author(s).　Published　by　IOP　Publishing　Ltd