How to Share ID Documents Safely (Passport, Driver’s License, KYC) — Without Creating a Permanent Leak

I learned this the uncomfortable way: the fastest way to get help (a visa question, a bank onboarding issue, a rental application) is to send a photo of your ID. And the fastest way to lose control of your identity is… also to send a photo of your ID.

A passport or driver’s license photo is basically a “starter kit” for identity theft: full name, birthdate, document number, issuing country, and often your address — plus a face image that can be reused in scams. The goal isn’t to be paranoid. It’s to share what’s needed, for only as long as needed, and in a way you can revoke.

This guide is my practical workflow for sharing ID documents safely: what to redact, how to reduce the blast radius, and how to share using an expiring link (optionally password-protected) instead of leaving a permanent attachment in email or chat.

Why ID document photos are high-risk (even if you trust the recipient)

Most leaks don’t happen because the recipient is evil. They happen because links get forwarded, inboxes get compromised, devices get lost, and “I’ll delete it later” never happens.

• They’re reusable: many services accept “a photo of an ID” as verification.
• They include multiple identifiers: name + birthdate + ID number + face.
• They live forever: email threads, shared drives, customer support systems, and chat backups.
• They’re hard to rotate: you can rotate a password in 60 seconds. You can’t rotate your birthdate.

The 60-second checklist before you send an ID photo

What to redact on common IDs (practical “cover this” list)

Redaction is situational, but here’s my default posture: assumethe recipient only needs to confirm you’re the same person who is applying, not to collect every number printed on the card.

Passport

• Passport number: redact unless the form explicitly requires it.
• MRZ (machine-readable zone): redact — it contains the document number and other data.
• Signature (if present): cover it.
• Full-page scan: avoid if a cropped photo page is enough.

Driver’s license / national ID

• ID number / license number: cover it unless required.
• Address: almost never needed for “identity.” Redact.
• Barcode/QR/mag stripe area: redact (it can encode the same data).
• Signature: redact.

Student ID / employee badge

• Student/employee number: redact.
• Access patterns: badges sometimes imply building access rights.

Redaction tip: use an opaque box (solid black) rather than a light blur. Light blur is sometimes recoverable.

How to redact quickly (without fancy tools)

You don’t need Photoshop. You need a workflow you’ll actually do under pressure.

Best way to share: expiring link (and when to use a password)

In practice, the safest default is: expiring link + revocation. It’s simple for recipients and gives you a kill switch.

1. Upload the redacted image. (Prefer a copy, not the original.)
2. Set expiry. 24 hours for support tickets; 7 days if a compliance team needs time.
3. Add a password if the link is going through email or a chain of people.
4. Share password separately. It feels old-school, but it works.

A password is most valuable when: (1) you don’t control forwarding, (2) multiple recipients are involved, or (3) you suspect inbox compromise risk.

Suggested expiry times (what I use)

Copy/paste templates (support, rental, finance)

FAQ

My default recommendation

If you only remember one thing: send the minimum, for the minimum time. Redact, use an expiring link, and revoke access as soon as you get confirmation.

It takes an extra minute. It can save months of cleanup.