Tamper Alarm

Introduction

The Tamper Alarm bit is available in NXp G2iL+ and G2iM+ chips.

Configuration

EPC filter

It is possible to configure the standard EPC filter to use the Tamper Alarm bit

Filter by tags having the Tamper Alarm bit intact

Filter by tags having the Tamper Alarm bit broken

Inventory

It is also possible to perform inventories that retrieve Tamper Alarm data

Any call to REST inventory method will provide Tamper Alarm data.

See red parts for Tamper Alarm data. Please note the complete 16 bits at position 200h will be returned. The Tamper Alarm bit is the first available bit.

    • 0: for the first inventoried tag

    • 1: for the second inventoried tag

<?xml version="1.0" encoding="UTF-8"?>

<inventory>

<type>inventory</type>

<ts>1512482946000</ts>

<status>OK</status>

<msg-version>2.3.0</msg-version>

<op>inventory</op>

<data>

<advanNetId>AdvanNet-instance-7c:66:9d:6e:f2:e6--1</advanNetId>

<deviceId>AdvanReader-m2-60</deviceId>

<inventory>

<class>INVENTORY</class>

<deviceId>AdvanReader-m2-60</deviceId>

<size>2</size>

<time>328</time>

<items>

<item>

<class>READ_EVENT</class>

<epc>e2006b070000000000000000</epc>

<ts>1512482946467</ts>

<deviceId>AdvanReader-m2-60</deviceId>

<data>

<class>TAG_DATA</class>

<hexepc>e2006b070000000000000000</hexepc>

<bank.EPC>

<class>EPCGen2Mem</class>

<bank>EPC</bank>

<offset>32</offset>

<data>4040</data>

</bank.EPC>

<props>

<prop>TIME_STAMP:1512482946467,</prop>

<prop>RSSI:-21,</prop>

<prop>RF_PHASE:143,</prop>

<prop>ANTENNA_PORT:1,</prop>

<prop>MUX1:0,</prop>

<prop>MUX2:0,</prop>

<prop>FREQ:866829,</prop>

<prop>GPI_STATE:0,</prop>

</props>

</data>

<locationData>

<class>LOCATED_TAG_DATA</class>

<epc>e2006b070000000000000000</epc>

<antenna>

<class>ANTENNA_DEFINITION</class>

<def>AdvanReader-m2-60,1,0,0,0,antenna1,1,0,0</def>

</antenna>

<location>

<class>LOCATION_DEFINITION</class>

<loc>antenna1,1,0,0</loc>

</location>

</locationData>

</item>

<item>

<class>READ_EVENT</class>

<epc>e2006b070000000000000001</epc>

<ts>1512482946478</ts>

<deviceId>AdvanReader-m2-60</deviceId>

<data>

<class>TAG_DATA</class>

<hexepc>e2006b070000000000000001</hexepc>

<bank.EPC>

<class>EPCGen2Mem</class>

<bank>EPC</bank>

<offset>32</offset>

<data>8040</data>

</bank.EPC>

<props>

<prop>TIME_STAMP:1512482946478,</prop>

<prop>RSSI:-42,</prop>

<prop>RF_PHASE:45,</prop>

<prop>ANTENNA_PORT:1,</prop>

<prop>MUX1:0,</prop>

<prop>MUX2:0,</prop>

<prop>FREQ:866829,</prop>

<prop>GPI_STATE:0,</prop>

</props>

</data>

<locationData>

<class>LOCATED_TAG_DATA</class>

<epc>e2006b070000000000000001</epc>

<antenna>

<class>ANTENNA_DEFINITION</class>

<def>AdvanReader-m2-60,1,0,0,0,antenna1,1,0,0</def>

</antenna>

<location>

<class>LOCATION_DEFINITION</class>

<loc>antenna1,1,0,0</loc>

</location>

</locationData>

</item>

</items>

</inventory>

</data>

</inventory>