Tech firms suggested placing trackers under offenders’ skin at meeting with justice secretary

Exclusive: Shabana Mahmood told companies she wanted deeper collaboration' to tackle prisons crisis

• Analysis: Whitehall's ambition to cut costs using AI is fraught with risk

Tracking devices inserted under offenders' skin, robots assigned to contain prisoners and driverless vehicles used to transport them were among the measures proposed by technology companies to ministers who are gathering ideas to tackle the crisis in the UK justice system.

The proposals were made at a meeting of more than two dozen tech companies in London last month, chaired by the justice secretary, Shabana Mahmood, minutes seen by the Guardian show. Amid an acute shortage of prison places and probation officers under severe strain, ministers told the companies they wanted ideas for using wearable technologies, behaviour monitoring and geolocation to create a prison outside of prison".