Feasting on balls of full length aimed well outside off-stump - in one of the Sussex wicketkeeper's favourite areas - Prior leant into a series of drives, intelligently angled to avoid a packedfield on that side, or lofted with precision over the men positioned on that side.
These boxes took in low-speed, asynchronous data from the field and packed it into high-speed (9600 bits per second, it seems quaint now) synchronous trunks.