From the Register:
"While text messages and phone calls are usually more easily intercepted at the network operator, the BlackBerry architecture doesn't lend itself to that kind of legally-authorised interception, which has caused problems in several other countries. It seems probable that this application was an attempt by the authorities to circumvent that architecture, and it will be interesting to see if a similar application appears on competing UEA operators."
Slashdot Mirror
From the Register: "While text messages and phone calls are usually more easily intercepted at the network operator, the BlackBerry architecture doesn't lend itself to that kind of legally-authorised interception, which has caused problems in several other countries. It seems probable that this application was an attempt by the authorities to circumvent that architecture, and it will be interesting to see if a similar application appears on competing UEA operators."