Abstract: The invention regards a system where only one first device has a radio frequency identification tag that is recognized by payment software and vice versa. Hence, it is preventing that the payment software is utilized as a clone in other first devices. The first device can be a cellular phone (10), and the second device (32) a payment module for purchase through a point of sale, POS.

Abstract: The invention regards a method, a system and a package for payment and granting of postage rate for an item of mailing (10) through at least one of a network for data- and telecommunication. The item of mailing (10) is marked up with a telephone number (12) belonging to the mailer, and the mailer calls a pre-determined telephone number (14) to the distributor of items of mailing (10), thus through the pre-determined telephone number (14) confirming postage rate and payment of an item of mailing (10) at the distributor of mail.