Automation System
Stepping motors:

All of these
can be built to index different amounts by changing the pole configuration
can run both clockwise and counterclockwise
do not require commutators
can run at varying speeds

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Automation System
Vision sensors:

will more closely match the capabilities of the human eye
None of these
will remain very costly
can not improve much in the next decade
All of these

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Automation System
There are several procedures you can implement to provide maximum security. The most important of these is:

do not leave training manuals unsecured
do not allow unbonded service people to work on your equipment
run regular simulated tests using TARP (testing of Applications Recovery Planes)
None of these
Verify the reputation of the people installing your system

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