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How It Works5 min read

How Reverse Photo Lookup Catches Scammers Using Stolen Photos

Reverse photo lookup compares a face against a database of known scammer profiles using perceptual hashing. Here's exactly how it works — and why it's so effective at catching identity theft.

When a scammer sends you a photo, they're almost never sending you a picture of themselves. They've stolen it from someone else — a model, a soldier, a doctor — and they're using it to build a fake identity. Reverse photo lookup is the technology that exposes this deception in seconds.

What is a perceptual hash?

A perceptual hash (pHash) is a digital fingerprint of an image based on its visual content — not its file data. Unlike a regular file hash that changes if you resize or re-save an image, a pHash stays nearly identical even if the image is cropped, filtered, or compressed. This makes it ideal for matching photos that have been slightly modified to avoid detection.

How MyLoopNetwork's scan works

When you upload a photo, our system computes its pHash and compares it against every fingerprint in our database using Hamming distance — a measure of how many bits differ between two hashes. A distance of 10 or less is a strong match. Between 11 and 20 is inconclusive. Above 20 is clean. The entire comparison happens in milliseconds regardless of database size.

What is identity mismatch detection?

This is our most powerful feature. If you upload a photo and tell us the name the person gave you, we compare that name against the name on file for the matching photo. If they differ — say the photo is on file as 'Patricia' but the person told you they're 'Keisha' — we flag it as an identity mismatch. You can also upload without a name: if the photo matches any report in our database, we'll show you whose photo it actually is.

Why stolen photos are so common

Scammers steal photos because building a convincing fake identity from scratch is hard. Real people have years of social media history, tagged photos, and a consistent online presence. It's far easier to steal the identity of an attractive, credible-looking person and use their photos. Military personnel and healthcare workers are especially targeted because their professions command trust.

What to do when you get a match

If a scan returns a match or identity mismatch, stop all contact with the person immediately. Do not send any money. Report the account on the platform where you met them. Submit a report to MyLoopNetwork so we can add the scammer's contact details to our database and protect others. You can also file a report with the FTC at reportfraud.ftc.gov.

Try it yourself — it takes 10 seconds

Upload any photo someone sent you and find out if it belongs to a known scammer. Free, anonymous, and instant.

Verify a Photo Now