|* Inanimate and animate objects<br>* Item (6)<br>* Time<br>* Environmental condition<br>* Unattended facilities<br>* Sensing device<br>* Asset management and tracking<br>* Container<br>* Number of mail units<br>* Articles through customs<br>
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|colspan = "3"|'''Note:''' Number in ( ) indicates occurrence in more that one patent or main claims.