The E-seal is a radio frequency device that transmits container information when interrogated by an RFID portal or mobile reader. It combines the mechanical security of standard seals with the electronic security offered by RFID technology. The E-seal has a unique ID code and can read-write user memory capabilities. It provides automatic identification of trucks, trailers, and containers.
Many Customs will use it to implement a certification system of an authorized economic operator (AEO) and use E-seal to enhance the efficiency of Customs clearance.

The E-seal is the mechanical bolt seal with RFID technology. It stands by the ISO 17712:2013 standard and other anti-tampering functions. The passive E-seal works without a battery and its reading range is about 2-3 meters with Handheld Device.