| 摘要 |
The invention concerns a device for enable to add to all chip or microprocessor pay cards an electronic purse actuated on the basis of the value of the purchase and instantly rechargeable at any time on the site of the sale outlet. The device firstly comprises reserve funds for the electronic purse, which is almost in the form of a complementary electronic purse for the current electronic purse, and which, at the card level, is physically represented by a second balance whereof the content varies according to use. |
