In order to assist in the screening and monitoring of possible infected by COVID-19, whose fever is one of the initial symptoms, a RFID tattoo tag for human monitoring was developed. The prototype of the tattoo tag presented proved to be effective in measuring human body temperature from 36° to 40° C, thus being a viable option for large-scale screening and analysis, and for being made with aluminum foil and school adhesive tape. That when using these materials, it presents itself as a disposable device, of low cost, durable, and operable in the RFID UHF frequency range.