Keep a data-minimization diary, not a confession inventory

People disclose differently to a patient, agreeable interface than to a form. That is part of the appeal of companionship, but it can make collection feel consequence-free. A minimization diary interrupts the habit gently: not “never share,” but “know why this detail is needed and what less identifying version would do.”

Use categories, not intimate text

For one week, log only the type of information shared: location, health, work, finance, relationship, third-party detail, biometric media or ordinary preference. Add purpose, whether the detail was necessary, whether a synthetic substitute would work, and which control applies. Do not copy the disclosure itself into the diary. The diary should reduce duplication, not create a second sensitive archive.

Apply a three-question pause

1. Does the companion need this exact detail to answer?
2. Could I generalize, fictionalize or omit it?
3. Would I be comfortable seeing it in an export or support review?

The ICO describes data protection by default as limiting personal information to what is necessary for a specific purpose. That duty is aimed at organizations under UK law; a reader can still use necessity as a personal decision tool without assuming the burden belongs only to them.

Notice third-party exposure

Your friend, child, colleague or client did not consent merely because you trust the companion. Replace names with roles, remove unique dates and avoid uploading messages or photos you do not control. Google Play’s user-data policy classifies contacts, microphone, camera and other categories as personal or sensitive and tells developers to collect only data critical to app functionality. Store disclosure labels are a starting point, not a guarantee about every conversational inference.

Review outcomes, not guilt

At week’s end, count categories and identify disclosures that produced clear value. Perhaps a timezone improves reminders while an employer name adds nothing. Change one behavior or setting. Do not treat a high count as moral failure; the interface is designed for conversation, and the goal is informed choice.

Delete the diary on schedule

Keep only the resulting rules, such as “use city, not street” or “no third-party screenshots.” Destroy the category log after review. Repeat after a major feature or policy change.

Turn one pattern into a safer substitute

If the diary shows repeated workplace details, create a standing rule: use “my manager” and a broad industry, never names, employer or client documents. If location appears often, use timezone or region unless navigation truly requires more. Test whether the companion remains useful with the substitute. When it does, the extra detail had little functional value. When it does not, decide deliberately whether that benefit warrants the additional disclosure.

Minimization complements, but cannot replace, provider responsibility. Use the six-screen audit to inspect product controls and the privacy-policy guide to compare the organization’s written commitments.