Tiré d'un brevet : "The same protocol is used for all labels in the system. The protocol field 41 therefore primarily serves as a “wake-up” field for each label. Next is an address field 43, comprising the address of the label for which the frame is intended. The next field is a code field 45, comprising an authorization code, which may be either an access code or a key code. The access code is required for certain commands, for example to update information. For other commands, for example to view certain information, the key code is sufficient. Other commands may not require a code at all. The command is comprised in a command field 46. Next, a data field 47 comprises data, for example, updates for one or more registers 37 of the label. The last field is a checksum field 49. Of course, other fields may be included in the frame, or the order of the fields may be changed."

Donc c'est bien le même code qui est utilisé pour wake-up toutes les étiquettes mais se peut-il que s'il n'y a pas l'adresse, ou que l'adresse ne correspond pas, l'étiquette ne wake-up pas pour ne pas gâcher de batterie ? Voir elle ne wake-up pas s'il n'y a pas la trame complète (wake-up, adress, command, data, checksum) ?