A closure comprising: a first closure portion including: a polymeric top wall portion; a polymeric annular skirt portion depending from the polymeric top wall portion, the annular skirt portion including an internal thread formation for mating engagement with an external thread formation of a container; and a second closure portion including: a polymeric tamper-evident band, the tamper-evident band depending from and being at least partially detachably connected to the polymeric annular skirt portion by a frangible connection, wherein the closure has an unopened position and an opened position, the opened position occurring when the tamper-evident band has been at least partially broken from the polymeric annular skirt portion, characterised in that the closure includes a 2-stage tag imbedded therein, the 2-stage tag including an antenna, a switch with a plurality of leads, and a chip or integrated circuit, the current path of the switch being interrupted after the tamper-evident band has been at least partially broken from the polymeric annular skirt portion, the chip or integrated circuit stores a first readable code and a second readable code, the first readable code being obtained when the closure is in the unopened position, the second readable code being obtained when the closure is in the opened position, wherein the frangible connection extends through the 2-stage tag and includes at least two bridges. a polymeric top wall portion; a polymeric annular skirt portion depending from the polymeric top wall portion, the annular skirt portion including an internal thread formation for mating engagement with an external thread formation of a container; and a second closure portion including: a polymeric tamper-evident band, the tamper-evident band depending from and being at least partially detachably connected to the polymeric annular skirt portion by a frangible connection, wherein the closure has an unopened position and an opened position, the opened position occurring when the tamper-evident band has been at least partially broken from the polymeric annular skirt portion, characterised in that the closure includes a 2-stage tag imbedded therein, the 2-stage tag including an antenna, a switch with a plurality of leads, and a chip or integrated circuit, the current path of the switch being interrupted after the tamper-evident band has been at least partially broken from the polymeric annular skirt portion, the chip or integrated circuit stores a first readable code and a second readable code, the first readable code being obtained when the closure is in the unopened position, the second readable code being obtained when the closure is in the opened position, wherein the frangible connection extends through the 2-stage tag and includes at least two bridges. a polymeric tamper-evident band, the tamper-evident band depending from and being at least partially detachably connected to the polymeric annular skirt portion by a frangible connection, wherein the closure has an unopened position and an opened position, the opened position occurring when the tamper-evident band has been at least partially broken from the polymeric annular skirt portion, characterised in that the closure includes a 2-stage tag imbedded therein, the 2-stage tag including an antenna, a switch with a plurality of leads, and a chip or integrated circuit, the current path of the switch being interrupted after the tamper-evident band has been at least partially broken from the polymeric annular skirt portion, the chip or integrated circuit stores a first readable code and a second readable code, the first readable code being obtained when the closure is in the unopened position, the second readable code being obtained when the closure is in the opened position, wherein the frangible connection extends through the 2-stage tag and includes at least two bridges.