公开(公告)号：US12093767B1

公开(公告)日：2024-09-17

申请号：US17970729

申请日：2022-10-21

申请人： Impinj, Inc.

发明人： Christopher J Diorio ,  Joel Peshkin

IPC分类号： G06K19/07

CPC分类号： G06K19/0723

摘要： RFID tags capable of transitioning between a private state and one or more public states are provided. In the private state, tags may participate in an inventory round without restriction. In a public state, tags may be prevented from participating in an inventory round, allowed to participate without providing actual identifying information, or allowed to participate providing an alternate identifier. Whether and how the tag responds in a public state may depend on certain conditions including if one or more of the tag's flags are asserted or deasserted. A reader may select a public tag for inventorying by verifying itself, and the tag then asserting or deasserting one or more of its flags accordingly. The asserted or deasserted flag(s) may be used to determine whether and how a tag in a public state participates in an inventory round.