RF TAG

By laying and arranging an auxiliary antenna on an inlay that includes an IC chip and an antenna and housing the inlay in, for example, a metal housing, wireless communication by the inlay and the auxiliary antenna with the outside of the housing can be performed in a favorable state while reliably protecting the inlay and the antenna from physical external force and shock. Provided is a RF tag that comprises an inlay 10 including an IC chip 11 and an antenna 12; and a housing 50 that houses therein said inlay 10. The housing 50 includes: a top cover 51 that covers the upper surface side of the inlay 10; and a back cover 52 that covers the lower surface side thereof. The top cover 51 is formed of a predetermined metal material, includes a cutaway part 51a that opens to a portion on the upper surface side of the inlay 10, and functions as an auxiliary antenna of the inlay 10 by being electrically connected to the inlay 10.