# Detect tampered and deepfake Immigration Stamp > An immigration stamp is an ink impression rather than a printed field, and that difference is the whole of the detection problem. Ink pressed through a die bleeds into paper fibre, varies in density with the pressure applied, and never lands twice at the same angle. A stamp added in an editor is uniform, sits on top of the page instead of in it, and is often a pixel-perfect copy of another impression in the same book. TamperCheck compares impressions across the page. **Canonical URL:** https://tampercheck.ai/documents-support/immigration_stamp **API document class:** `immigration_stamp` **Last updated:** 2026-10-07 --- ## What a genuine immigration stamp contains A border stamp records one crossing in a handful of elements: the port or checkpoint name and its code, the date of the crossing, an arrow or symbol separating entry from exit, the issuing authority, and often an officer or booth number. The die has a fixed shape per authority, usually a circle, rectangle, or triangle, with the date set on a movable wheel inside it. Ink colour is prescribed, and passport pages carry a light background pattern designed for impressions to sit on. A single stamp says very little, and the set says almost everything. Entries have to pair with exits, dates have to run forward, and each crossing has to be geographically possible given the one before it. Port codes have to belong to the authority named in the impression, and the wheel date has to fall inside the period the passport itself was valid. A stamp that contradicts the sequence around it is a stronger signal than any single impression's appearance. ## How immigration stamp forgeries are made ### Cloned impressions A stamp is copied from elsewhere in the same passport and pasted where a crossing is wanted. Two impressions from one die are never identical in a real book, because ink load, pressure, and angle vary on every application, so a pixel-level match between two stamps proves copying rather than consistency. ### Flat digital overlays A stamp is drawn or pasted onto a scanned page. Real ink spreads into the paper, leaving ragged edges and density that changes across the impression. An overlay has clean edges and even fill, and it covers the page background pattern rather than letting it show through the ink. ### Date wheel edits Only the date is altered, leaving a genuine impression otherwise intact. This is what manufactures compliance with a residence rule or a day-count limit, and the changed digits usually differ from the rest of the impression in ink density and in how their edges meet the paper. ### Invented ports and authorities A stamp names a checkpoint the issuing authority does not operate, or pairs a real port with the wrong code or the wrong die shape. These survive an officer flicking through a book and fail as soon as the impression is read against that authority's published conventions. ### Removed stamps and missing pages Overstays are concealed by taking evidence away rather than adding it: an impression lifted chemically, a page cut out, or a passport reported lost and reissued. What remains is a gap in the sequence, a page number that jumps, or paper whose tone no longer matches the sheets around it. ### Counterfeit dies Custom stamps are cut to order from a photograph of a real impression. The ink behaves correctly because it is real ink, so analysis moves to the die: letterform spacing, the curvature of text around the rim, and the overall size of the impression measured against a genuine specimen. ## What TamperCheck checks on an immigration stamp TamperCheck runs 200+ forensic checks across three layers and returns a risk score from 0 to 100 with plain-English findings tied to specific regions of the document. These three carry the most weight on this document class. ### Security print, foil, and hologram analysis A genuine security overlay or guilloche background behaves differently from a printed picture of one. A reproduction loses the structure that made the feature a security feature in the first place, and that loss is measurable even when the copy looks convincing on screen. ### Stamp authenticity and placement Stamps are assessed for whether the ink was impressed onto the page or printed as part of it, and for whether the impression was placed digitally after the fact. ### Date and validity consistency Issue, expiry, and period dates are checked against one another and against the file's own creation metadata, which catches backdating and validity extension. ### And many more checks The three above are the layers that carry the most weight on an immigration stamp. Every upload runs the full suite of 200+ checks regardless of document class, spanning file structure and metadata, pixel-level forensics, font and text rendering, optical and print characteristics, provenance signals, AI-generation signatures, and many more checks. ## Who verifies an immigration stamp, and why Immigration officers and residency programmes reconstructing travel history. In each case the document is being used to unlock money, access, or a legal status, which is exactly what makes it worth forging. ## How to verify an immigration stamp in 4 steps 1. **Reconstruct the sequence across the whole book.** Put the crossings in date order and check that entries pair with exits, that dates run forward, and that consecutive stamps are geographically possible. A fabricated impression is usually added to fill a gap in a travel history, so it is the one that does not fit the chain around it. 2. **Overlay repeated impressions from the same port.** Find every stamp from one checkpoint and compare them. Genuine impressions from a single die differ in ink coverage, rotation, and pressure. Two that match exactly were copied, and one that matches none of the others from that port came from a different die altogether. 3. **Read the ink against the paper.** An impression should show fibre spread at its edges, thinner ink where the pressure was lighter, and the page's background pattern visible through it. Ink that stops at a hard edge and hides the pattern beneath was added to the image rather than pressed onto the page. 4. **Run a forensic check on the page.** Stamps are low-contrast, overlapping, and hand-applied, which is the exact condition under which visual review fails. TamperCheck analyses each impression in place and returns a risk score from 0 to 100 with findings tied to the regions they came from, at $0.50 per document. ## Frequently asked questions ### How do officers detect fake passport stamps? Officers read the impression against the sequence rather than on its own, checking that the crossing pairs with a matching entry or exit, that the dates run in order, and that the journey implied is possible. They also know their own authority's die shapes, port codes, and ink colours, so an impression that is the wrong size or names an unfamiliar checkpoint stands out immediately. ### Can immigration stamps be forged? Yes, by three routes: cloning an existing impression digitally, drawing one onto a scan, or having a physical die cut from a photograph. Each leaves different evidence. Cloned stamps repeat perfectly where real ones never do, drawn stamps lack ink spread into the fibre, and counterfeit dies get the letterforms and dimensions subtly wrong. ### Why would someone add a fake entry stamp to a passport? To manufacture a travel history that pays. Continuous residence supports citizenship and settlement applications, days outside a country support tax residency claims, and a missing exit stamp turns a lawful stay into an apparent overstay. The stamp costs nothing to fabricate and is rarely checked against anything, which is what makes it attractive. ### Can a forged stamp be detected from a scan of the page? Yes, and a scan is often better than the naked eye for it, because the differences are in ink behaviour rather than in appearance. A scan preserves edge spread, density variation across the impression, and whether the page pattern shows through. It also makes duplicate impressions directly comparable, which is how cloned stamps are caught. ## Related document types - Passport: https://tampercheck.ai/documents-support/passport - ID Card: https://tampercheck.ai/documents-support/id_card - National ID: https://tampercheck.ai/documents-support/national_id - Driver's License: https://tampercheck.ai/documents-support/drivers_license - Voter ID: https://tampercheck.ai/documents-support/voter_id - Social Security Card: https://tampercheck.ai/documents-support/social_security_card --- Try TamperCheck now: https://tampercheck.ai/dashboard · Docs: https://tampercheck.ai/docs · Pricing: https://tampercheck.ai/pricing