A system comprising: a mobile terminal, a point of purchase server at a point of purchase for purchasing merchandise, and a point of receipt server at a point of receipt for receiving purchased merchandise, the mobile terminal, point of purchase server and point of receipt server being connected via a network; wherein the mobile terminal comprises a non-contact IC card having an antenna and being configured to receive information from or send information to an IC card reader/writer of the point of receipt server; whereby the non-contact IC card is configured to hold a first copy of a card identification number which identifies the non-contact IC card and purchasing information comprising a second copy of the card identification number and information relating to electronic purchases made using the mobile terminal, the purchasing information being generated by the point of purchase server during the purchase of merchandise by a user of the mobile terminal, wherein the non-contact IC card is configured to not permit making, editing or deleting of the purchasing information without a purchasing information re-writing key provided to the non-contact IC card by the IC card reader/writer or point of purchase server, wherein the non-contact IC card further comprises the purchasing information re-writing key wherein the non-contact IC card is configured in use to update said purchasing information using said purchasing information re-writing key, and after updating, the non-contact IC card is configured to delete the purchasing information re-writing key; and the user of the mobile terminal is authenticated as the purchaser of the merchandise at the point of receipt by the point of receipt server acquiring the purchasing information from the point of purchase server and comparing the first copy of the card identification number held by the non-contact IC card with the second copy of the card identification number comprised within the purchasing information. a mobile terminal, a point of purchase server at a point of purchase for purchasing merchandise, and a point of receipt server at a point of receipt for receiving purchased merchandise, the mobile terminal, point of purchase server and point of receipt server being connected via a network; wherein the mobile terminal comprises a non-contact IC card having an antenna and being configured to receive information from or send information to an IC card reader/writer of the point of receipt server; whereby the non-contact IC card is configured to hold a first copy of a card identification number which identifies the non-contact IC card and purchasing information comprising a second copy of the card identification number and information relating to electronic purchases made using the mobile terminal, the purchasing information being generated by the point of purchase server during the purchase of merchandise by a user of the mobile terminal, wherein the non-contact IC card is configured to not permit making, editing or deleting of the purchasing information without a purchasing information re-writing key provided to the non-contact IC card by the IC card reader/writer or point of purchase server, wherein the non-contact IC card further comprises the purchasing information re-writing key wherein the non-contact IC card is configured in use to update said purchasing information using said purchasing information re-writing key, and after updating, the non-contact IC card is configured to delete the purchasing information re-writing key; and the user of the mobile terminal is authenticated as the purchaser of the merchandise at the point of receipt by the point of receipt server acquiring the purchasing information from the point of purchase server and comparing the first copy of the card identification number held by the non-contact IC card with the second copy of the card identification number comprised within the purchasing information.