GM1913
What this fingerprint profile shows
Every photo taken by a GM1913 carries a consistent set of metadata patterns — written automatically by the firmware at the moment of capture, regardless of any app or privacy setting. The signals below are derived from 6 analysed files and document exactly what this device embeds in every image it creates.
GPS rate — how often this device records your precise location in the file, even when you don't realise GPS is active
DQT compression fingerprint — a unique 64-value matrix baked into the firmware that identifies this camera model even after EXIF metadata has been stripped
MakerNote & firmware strings — proprietary manufacturer data and firmware version tags that reveal processing history, lens details, and scene settings
Privacy risk signals — owner name, body serial number, and lens serial number fields that may contain personally identifying information
Further reading — snapWONDERS Founder:
All patterns are aggregated and anonymous — no originals retained. Privacy details →
Your GM1913 embeds these signals in every photo you share.
Strip with VaultifySOF Compression TypeStart of Frame marker — identifies the JPEG compression algorithm. SOF0 = baseline DCT (most common); SOF2 = progressive DCT (multiple passes, common in web-optimised images).
JPEG compression markers (SOF0 = baseline, SOF2 = progressive).
| Observed value | |
|---|---|
| SOF0 |
JPEG Segment InventoryThe set of JPEG markers consistently present in output from this device. Marker presence and order are firmware-determined and can help distinguish camera lineages.
APP and SOF segments consistently present in output from this device.
| Observed value | |
|---|---|
| APP1Primary metadata container — holds EXIF camera data (make, model, GPS, settings) and optionally XMP. | |
| DHTDefine Huffman Table — the compression lookup table baked in by the encoder. | |
| DQTDefine Quantization Table — the 64-value lossy compression matrix. Consistent per firmware; useful as a fingerprint. | |
| SOF0Start of Frame, Baseline DCT — the most common JPEG compression type. | |
| SOSStart of Scan — marks the beginning of the compressed image data stream. |
Metadata Block TypesThe metadata container formats found in files from this device — EXIF, IPTC, XMP, JFIF, and others. Different devices and software pipelines embed different combinations.
| Observed value | |
|---|---|
| Exif |
Your photos carry this device fingerprint.
Vaultify strips device metadata before sharing — and can hide a private message inside your photo, invisible to forensic scanners like these.
