In order to establish the offences referred to in articles 414, 414-2, 415 and 459 and, where these are committed by electronic means of communication, to gather evidence and track down the perpetrators, accomplices and those who participated as interested parties within the meaning of article 399, customs officers authorised by the minister responsible for customs under conditions laid down by decree may, after informing the public prosecutor and unless this magistrate objects, carry out the following acts without being criminally liable:
1° Participate under a pseudonym in electronic exchanges ;
2° Use the means referred to in 1° of this article to contact persons likely to be the perpetrators, accomplices or parties involved in the fraudulent commission of these offences;
3° Extract, acquire or retain evidence and data on persons likely to be the perpetrators, accomplices or parties involved in the fraud of these offences by this means.
If the needs of the customs investigation so require, authorised customs officers may use an assumed identity. Revealing the identity of these officials is punishable by the penalties laid down in V of Article 67a.
Under penalty of nullity, these acts may not constitute incitement to commit these offences.