HMPPS’s failure to deliver Gemini also means that police forces and the Probation Service lack timely access to tagging data to investigate crime, supervise offenders and protect the public.20 HMPPS expected Gemini and the user portal to provide a range of benefits for stakeholders, including: a single version of case management records; improved management information and reporting; and access to historical and real-time maps of offenders’ movements for offenders wearing GPS tags. Without Gemini, police and probation officers cannot access data in real-time across all offenders on GPS tags and have to submit manual requests for location data.21