Today, customs administrations all over the world have committed to joining CSI and are at various stages of implementation.  

CSI is now operational at ports in North, Central, and South America, the Caribbean, Europe, Africa, the Middle East, and throughout Asia. In October 2007, the US Customs and Border Protection released a fact sheet to better explain what the CSI is and how it works. We feature an abridged version here. Please visit www.cbp.gov for more details.

CSI addresses the threat to border security and global trade that is posed by potential terrorist use of a maritime container to deliver a weapon. CSI uses a security regime to ensure all containers that pose a potential risk for terrorism are identified and inspected at foreign ports before they are placed on vessels destined for the United Sates. Through CSI, CBP officials work with host customs administrations to establish security criteria for identifying highrisk containers. Those administrations use non-intrusive inspection (NII) and radiation detection technology to screen high-risk containers before they are shipped to US ports.
From PTI 37 page 109. Read the full article here.