There is disclosed a method of transferring data using a tag, said tag comprising an RF interface unit, a host interface unit and a memory, the method comprising: the RF interface unit connects the tag to an RF device; the host interface unit connects the tag to a host device; the tag enters into a pass-through mode; in said pass-through mode, the tag transfers data, either in a first configured transfer direction, from the RF device to the host device, or, in a second configured transfer direction, from the host device to the RF device; in said pass-through mode, the tag buffers said data in the memory. Furthermore, a corresponding computer program product and a corresponding tag are disclosed.