Medlemsstaternes ansvarlige myndigheder kan kræve, at elektroniske bud ledsages af en avanceret elektronisk signatur, som omhandlet i artikel 2, nr. 2), i Europa-Parlamentets og Rådets direktiv 1999/93/EF [11].
The competent authorities of the Member States may require that electronic tenders be accompanied by an advance electronic signature within the meaning of Article 2(2) of Directive 1999/93/EC of the European Parliament and of the Council [11].