The seller of tobacco products, smoking aids, herbal smoking products, electronic cigarettes, nicotine-free sachets and nicotine-containing products by means of distance communication shall be obliged to notify the Ministry of Health in writing of the details of the age verification system and its operation, in the case of: (a) the cross-border sale of tobacco products and electronic cigarettes that can be used for the use of vapours containing nicotine, within 5 days from the date of receipt of the certificate of registration under the Food and Tobacco Products Act, (b) the sale of tobacco products, electronic cigarettes, nicotine sachets without tobacco content and products containing nicotine on the territory of the Czech Republic, within 15 days before the date of commencement of such sales, c) the sale of smoking aids and herbal products intended for smoking, within 15 days before the date of commencement of such sales, or d) a change in these data, within 30 days from the date on which the change occurred. Notification shall be made through the Notified Food Register module of the Register of Cross-Border Sales of Electronic Cigarettes and the age verification system for the purchaser of tobacco and related products.