A sheet (42) for use in situations where information of a confidential nature is required to be completed on a form, paper, questionnaire or the like is provided. The sheet of material (42) having a coverable area (54), a foldable portion (46) and first (48) and second linear (60) perforations. The sheet of material (42) can be folded at the first linear perforation (48) such that a first portion (56) of the foldable portion (46) covers the coverable area (54) and a second portion (58) of the foldable portion (46) is adhered to a bonding area (66) adjacent to the coverable area (54). The first (48) and second (60) linear perforations delimit a detachable section (56) of the foldable portion (46) which can be removed after the foldable portion (46) has been adhered to the bonding area (66). A set of anti-tamper perforations (64) is provided in one or both of the second portion (58) of the foldable portion (46) and the bonding area (66).
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