From Longman Dictionary of Contemporary Englishan open invitationan open invitationa) VISITan invitation to visit someone whenever you like b) EASYsomething that makes it easier for criminals to steal, cheat etcan open invitation to The lack of security measures provides an open invitation to crime. → open
Examples from the Corpus
open to• Is there an open invitation to abuse even in some of the innocent parts?• The wizards designing Macintosh considered it an open invitation to childlike play, and judged that ability among its chief attributes.• It would also have been an open invitation to civic disturbance.• The Carter team feared that the remark and the attitude it conveyed would be an open invitation to execute Kim.• The latter is not an open invitation to intervention or a threat to sovereignty.• I extend to the hon. Gentleman an open invitation to join me on any subsequent occasion.• In my opinion, a skip should be regarded as an open invitation to selective plundering.• If a thief steals it, you could be giving him an open invitation to your home! 