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Andor Newton is one example.

Preliminary conclusion: we can make the IOC work with the shutter-closing timestamp, and timing system has the shutter-opening timestamp

Requirements:

• has to be joined to the "shutter closing" event, so it needs that timestamp (Dan says natural idea in IOC is timestamping with shutter-opening trigger).  Possible hack: use two different event-codes: one for opening the shutter (IOC ignores this one) and one for closing the shutter (IOC listens to this one for the timestamp).  
• data would contain the "shutter opening" timestamp: the makes the recorded data a more complicated structure, but maybe not: Matt points out that the timing system already has this information, so no need to complicate the data structure.

All of this requires event-code sequencing (complex).

(uncommon) Maybe not all experiments require precise timestamping: could use imprecise software triggering (python script, human doing something on keyboard?).  Dan thinks they always need to know the precise shots.

These two requirements suggest we might want to consider moving away from IOC/PV/AreaDetector reuse and use a standalone program, but maybe the hacks above would work?

RIX says they want this "in the future".