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IOSHEALTH, FITNESS & MOTION · A GUIDE FOR UK LAWYERS iOS Health, Fitness and Motion Data The Quiet Witness in a Pocket: Steps, Sleep and Movement, and the Care Their Reading Demands COMPUTER FORENSICS LAB

§ ABOUT THE AUTHOR PREPARED BY COMPUTER FORENSICS LAB E-DISCOVERY TEAM SPECIAL-CATEGORY DATA HANDLING CPR PART 35 EXPERT REPORT S FULL CHAIN-OF-CUSTODY DOCUMENTATION

§ CONTENTS In this guide 01 Executive summary 02 The problem in plain English: a witness people forget to silence 03 What iOS health, fitness and motion data records 04 Where it lives and how it is recovered 05 Indicative not clinical: interpreting with care 06 Special-category data and attribution 07 Deployment: corroborating or contradicting an account 08 Source architecture: where else the evidence lives 09 Worked examples 10 Common mistakes and technical limitations 11 Questions to ask · Suggested wording 12 Checklist and red flags · When to involve a digital forensic expert 13 Frequently asked questions 14 Glossary · References · Disclaimer · How a specialist laboratory can assist

§ 01 · ORIENTATION Executive summary low-level motion, a quiet witness that can corroborate or contradict an account of activity and movement, but health data is special-category, indicative not clinical, and must be attributed to a person and read with care.

§ 02 · FIRST PRINCIPLES The problem in plain English: a witness people forget to silence

§ 03 · WHATITRECORDS What iOS health, fitness and motion data records