30 JALLOH v. GERMANY JUDGMENT himself. Similarly, in J.B. v. Switzerland (cited above, §§ 63-71) the Court considered the State authorities’ attempt to compel the applicant to submit documents which might have provided information about tax evasion to be in breach of the principle against self-incrimination (in its broader sense). 112. In Saunders, the Court considered that the principle against selfincrimination did not cover “material which may be obtained from the accused through the use of compulsory powers but which has an existence independent of the will of the suspect such as, inter alia, documents acquired pursuant to a warrant, breath, blood and urine samples and bodily tissue for the purpose of DNA testing” (cited above, § 69). 113. In the Court’s view, the evidence in issue in the present case, namely, drugs hidden in the applicant’s body which were obtained by the forcible administration of emetics, could be considered to fall into the category of material having an existence independent of the will of the suspect, the use of which is generally not prohibited in criminal proceedings. However, there are several elements which distinguish the present case from the examples listed in Saunders. Firstly, as with the impugned measures in Funke and J.B. v. Switzerland, the administration of emetics was used to retrieve real evidence in defiance of the applicant’s will. Conversely, the bodily material listed in Saunders concerned material obtained by coercion for forensic examination with a view to detecting, for example, the presence of alcohol or drugs. 114. Secondly, the degree of force used in the present case differs significantly from the degree of compulsion normally required to obtain the types of material referred to in the Saunders case. To obtain such material, a defendant is requested to endure passively a minor interference with his physical integrity (for example when blood or hair samples or bodily tissue are taken). Even if the defendant’s active participation is required, it can be seen from Saunders that this concerns material produced by the normal functioning of the body (such as, for example, breath, urine or voice samples). In contrast, compelling the applicant in the instant case to regurgitate the evidence sought required the forcible introduction of a tube through his nose and the administration of a substance so as to provoke a pathological reaction in his body. As noted earlier, this procedure was not without risk to the applicant’s health. 115. Thirdly, the evidence in the present case was obtained by means of a procedure which violated Article 3. The procedure used in the applicant’s case is in striking contrast to procedures for obtaining, for example, a breath test or a blood sample. Procedures of the latter kind do not, unless in exceptional circumstances, attain the minimum level of severity to contravene Article 3. Moreover, though constituting an interference with the suspect’s right to respect for private life, these procedures are, in general, justified under Article 8 § 2 as being necessary for the prevention of