Patent ID: 7880587

Claim:
A receiving method for contactless reception of identification from a data carrier through information units by a communication device, the method comprising: receiving a received information unit, wherein said communication device uses said received information unit as a first information unit originating from a first data carrier; waiting to deliver a first replacement information unit to at least the first data carrier and a second data carrier in a contactless manner until a collision is detected; detecting said collision when said communication device receives at least two different information units with different values essentially simultaneously, wherein the first information unit originates from the first data carrier and a second information unit originates from the second data carrier; using, as said first information unit originating from the first data carrier, a first replacement information unit established by the communication device instead of said received information unit only when the collision is detected; and delivering said first replacement information unit to at least the first data carrier and the second data carrier in a contactless manner when the collision is detected, wherein said first replacement information unit halts only the second data carrier from continuing delivery of an information unit immediately following the previously delivered second information unit.