An Auckland barrister says there's no silver bullet to fix court system delays.

The average number of days to resolve criminal cases in the District Court is 176 days - a jump of 62 days from five years ago.

National says the system should make better use of technology to clear backlogs, such as remote access options.

But Nick Chisnall KC says it would be a major step to conduct trials and sentencings remotely.

He says it should be a last resort as it requires people to agree to it, and for the necessary resources to be available.

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