1. The use by a supplier of the following distance communication techniques shall require the consumer's prior consent:
(a) automated calling systems without human intervention (automatic calling machines);
(b) fax machines.
2. Member States shall ensure that means of distance communication other than those referred to in paragraph 1, when they allow individual communications:
(a) shall not be authorised unless the consent of the consumers concerned has been obtained, or
(b) may only be used if the consumer has not expressed his manifest objection.
3. The measures referred to in paragraphs 1 and 2 shall not entail costs for consumers.