Abstract: A device and a method for detecting a blockage position in a pipeline by RFID technology is disclosed. An RFID tag is disposed in a pipe of a pipeline first, the RFID tag is read with a predetermined single or double frequencies, and finally whether the position of the pipe at which the RFID tag is located is blocked or not can be judged by the difference between the echo signals sent from the RFID tag. By the RFID technology, a contactless and non-destructive approach of detecting a blockage in a pipeline is implemented.

Abstract: The NFC-based tag includes a substrate, a first and second coils formed on the substrate and an NFC chip fixed on the substrate. A status code whose default value is 0 is stored in memory of the NFC chip. The first coil is connected to the NFC chip and serves as an antenna thereof. The NFC chip communicates with an NFC reader through the first coil. The NFC reader can read or write the status code through the first coil. The NFC chip has an IO contact and a grounding contact. The IO contact connects to the grounding contact via the second coil. The second coil serves as an EAS coil. The IO contact is connected to the grounding contact through the second coil to form a closed loop. The NFC reader rewrites the status code to be 1 irreversibly when the second coil is broken or has finished checkout.

Abstract: A RFID security structure for a document contains: a RFID antenna and a RFID chip. The RFID antenna is made of conductive inks printed on the document, and the RFID chip is attached on and is electrically connected with the RFID antenna. When the covering layer is removed from the document, the RFID antenna is broken. Accordingly, a portion of the RFID antenna attaches on the covering layer, and the other portion of the PRID antenna remains on the RFID security document or the substrate, hence the RFID security document is not tampered or is not imitated.

Abstract: A bonding structure of a chip and an electronic circuit contains: a chip holder, a chip accommodated in the chip holder, multiple conductive feet electrically connected with the chip, and an electronic circuit. The chip and the multiple conductive feet are covered by a packaging material, and a part of each of the multiple conductive feet exposes outside the packaging material to form an extension. The electronic circuit includes a porous substrate and an electric circuit connected on the porous substrate, wherein the electric circuit is formed from conductive inks which penetrate into the porous substrate, and the extension is inserted through the electric circuit, hence the extension is electrically connected with the electric circuit.