Comment by loodish

The implications of weaponising a lithium battery, which seems like what was done, are potentially really significant.

Lithium batteries are everywhere, most of them significantly larger than the one in a small pager. This includes secure environments like military/intelligence facilities and aircraft.

Proof that a lithium battery pack can be weaponised as a bomb, in a way that avoids easy detection, should be a significant concern to anyone who tries to maintain the security of those spaces.