1.   Entering a name into the diary for instance can be used to trigger an address search.

2.   Equipment was possibly used to trigger air raid sirens during the Second World War.

3.   Apparently, they can be used to trigger bombs.

4.   Blanks are used instead of bullets, pyrotechnic devices simulate explosions, and lasers mounted on guns are used to trigger sensors that everyone wears.

5.   Catalysts are used to trigger reactions in chemical and plastic manufacturing and also in oil refining.

6.   Eye movements were used to trigger the desired cluster of letters.

7.   Two cyanide capsules and batteries used to trigger the bombs were found.