A data carrier of any kind, in particular a plastic card, with authenticity features provided in said data carrier (1, 2), which on irradiation with a high-energy beam, e.g. a laser beam or an electron or neutron beam, are personalizable by means of changes in physical and/or chemical properties, wherein - the personalizable authenticity features are composed of at least one magnetizable component, - the personalizable authenticity features are magnetically configured, - the intensity and/or wavelength of the energy-rich beam is selected such that the personalizable magnetic authenticity features undergo a local structural change on irradiation, and - the magnetizable component of the personalizable magnetic authenticity features is at least partially destroyed by the local structural change, so that the personalized magnetic authenticity features form an area of lesser or no magnetic field in the overall image after irradiation, characterized in that - second authenticity features are provided in the data carrier (1, 2), which on irradiation with the said or a further energy-rich beam, e.g. a laser beam or an electron or neutron beam, are personalizable, in that the second personalizable authenticity features are composed of at least one color-active component, the second personalizable authenticity features are configured to be luminescent, wherein the intensity and/or wavelength of the beam is selected such that the personalizable luminescent authenticity features undergo a local structural change on irradiation, and in that the color-active component of the personalizable luminescent authenticity features is at least partially destroyed by the local structural change, so that the personalized luminescent authenticity features do not luminesce on irradiation together with the non-personalized luminescent authenticity features, thus causing a negative image in the overall luminescent image or a negative luminescent image to become visible. - the personalizable authenticity features are composed of at least one magnetizable component, - the personalizable authenticity features are magnetically configured, - the intensity and/or wavelength of the energy-rich beam is selected such that the personalizable magnetic authenticity features undergo a local structural change on irradiation, and - the magnetizable component of the personalizable magnetic authenticity features is at least partially destroyed by the local structural change, so that the personalized magnetic authenticity features form an area of lesser or no magnetic field in the overall image after irradiation, - second authenticity features are provided in the data carrier (1, 2), which on irradiation with the said or a further energy-rich beam, e.g. a laser beam or an electron or neutron beam, are personalizable, in that the second personalizable authenticity features are composed of at least one color-active component, the second personalizable authenticity features are configured to be luminescent, wherein the intensity and/or wavelength of the beam is selected such that the personalizable luminescent authenticity features undergo a local structural change on irradiation, and in that the color-active component of the personalizable luminescent authenticity features is at least partially destroyed by the local structural change, so that the personalized luminescent authenticity features do not luminesce on irradiation together with the non-personalized luminescent authenticity features, thus causing a negative image in the overall luminescent image or a negative luminescent image to become visible.