The Shroud of Turin is a length of linen cloth bearing the imprint of the image of a man, and is believed by some to be the burial shroud of Jesus. Despite conclusive scientific evidence that it is of medieval origin, multiple alternative theories about the origin of the shroud dating it to the time of Christ have been proposed. The Holy See received custody of the shroud in 1983, and as with other relics, makes no claims about its authenticity. After the 1988 round of tests, no further dating tests have been allowed.