Method and device for managing information exchange between for example a NFC controller and a set of at least two secure elements

摘要

The device may include a contactless element and a set of least two auxiliary elements. Each auxiliary element may include a slave SWP interface connected to a same master SWP interface of the contactless element through a SWP link, and a management module configured for activating at once only one slave SWP interface on the SWP link.

主权项

1. A method of managing communication between a contactless element and a set of auxiliary elements, the method comprising:
providing each auxiliary element with a slave single wire protocol (SWP) interface; connecting each slave SWP interface to a master SWP interface of the contactless element through a SWP link; and activating at least one slave SWP interface on the SWP link, the activating comprising
each slave SWP interface, listening to the SWP link for a selection frame including an identification of the at least one slave SWP interface to be activated, andthe at least one slave SWP interface to be activated responding to the selection frame, each other slave SWP interface remaining silent.