a carrier in which electric components are embedded, the electronic components comprising:

a memory for storing identifying data;

an antenna that is electrically connected to the electrical components; and

a thermochromic substance adapted to optically signal a previously assumed operating state, wherein the thermochromic substance is fitted in the vicinity of the electric components of the radio frequency identification tag and exhibits a plurality of color changes at different temperatures, and wherein the previously assumed operating state corresponds to an excessive power consumption of the electric components through the antenna, which leads to functional unserviceability of the radio frequency identification tag.