Amazing feat by Mossad...
What I understand so far, is they intercepted a shipment of several thousand pagers (5000 I believe) from Taiwan destined for Hezbolla and planted 2 ounces of explosive in each pager next to the battery.
The trigger was activated by sending a specific pager message to all pagers at the same time, with a delay to allow the target to get the pager out of his pocket and read the message.
I would love to know what the message said. Something like "Bang you're dead" would be appropriate.
Mossad contacts refused to answer questions saying "Sorry we are busy sending pages"