... Smart Tag: 1) Chip frequency: 125kHz -13.56kHz 2) Material: ABS, PVC 3) Shape: keychain, fob, token, wris key Fobs/Keychain ... Color: gray, blue, red 7) Application: parking, car, access control8) Looks like articleEM Tag CardFeatures:1) Card type: read only 2) Memory ... .8mm (T) 8) Applications: logistics automation, anti-counterfeiting, access control, industrialtransponder key Fobs/Keychain Smart Tag