Not too practical: "Set the bomb off in 2 minutes" and India finds out 13 minutes after the bang!
Sounds like RIM's solution isn't too efficacious as the time delay might be sufficient to let the bomb off and escape detection.
RIM could solve the solution by having two (three including the Obama version) levels of encryption - low grade for India and other developing countries and high grade for the less nosy governments.
Again, you can't beat software encryption contained wholly within a handset. RIM has proved that money (sales) comes before customer privacy.