The presidential seal (Irish: séala an uachtaráin[1]) is a seal used by the president of Ireland to authenticate his signature on official documents. The Constitution of Ireland requires certain documents to be issued under the president's "hand and seal", and in other cases the seal is mandated by act of the Oireachtas.[2] It is a single-sided "dry seal" impressed directly onto the fabric of the document, leaving a relief of its design without sealing wax or ink.[3]