A METHOD FOR DETERMINING THE LOCATION OF A PLURALITY OF DEVICES, A METHOD FOR UPDATING APPLICATIONS IN POS DEVICES, A METHOD FOR CREATING A LIST OF NEIGHBORING DEVICES, A METHOD FOR COMMUNICATION THROUGH FALLBACK LINK, A METHOD FOR CHOOSING THE COMMUNICATION MODE BETWEEN A DEVICE AND ONE OF AN ACQUIRER AND A SERVICE PROVIDER, AND A COMMUNICATION SYSTEM

摘要

The present invention provides a communication system comprising at least two POS devices (1, 10a, 10b, 11) which communicate by means of at least one communication protocol. In another embodiment, the proposed commu- nication system comprises at least two docking stations (15) which communi- cate with each other through at least one communication protocol. Moreover, methods to solve problems through the suggested communication system are described. These methods are: a method for creating a list of neighboring devices; a method for determining the location of a plurality of devices (1, 10a, 10b, 11, 4a, 4b,4c, 15); a method for choosing the communication mode between a device (1, 10a,10b, 11, 4a, 4b, 4c, 15) and an acquirer (12a) or a service provider (12b); a method for updating applications in POS devices (1, 10a, 10b, 11); and a method for communication through fallback link.