Abstract: The invention is a method of managing communication between a portable device and a contactless reader able to communicate using a first wireless technology configured to communicate in a short-range mode. The method comprises the steps of: establishing a first channel between the contactless reader and a wireless unit, establishing between the wireless unit and the portable device a second channel using a second wireless technology which is configured: to operate with a range greater than that of said first wireless technology, to detect the position of the portable device with respect to the wireless unit, to handle an anti-collision phase, establishing a bridge between the contactless reader and the portable device through said first and second channels only if the detected position of the portable device matches with the contactless reader.