Tamper-evident holograms explained—VOID, honeycomb, fragile paper, and more. Learn how each seal works and when to use it.
If you need to know whether something was opened, swapped, or messed with, tamper-evident holograms are simple and effective. They don’t stop a bad actor. They make tampering obvious. In this guide, I explain the main types you’ll see—VOID, honeycomb, checkerboard, custom patterns—and the materials behind them, including fragile paper (often called eggshell) and ultra-destructible films. I’ll also cover transfer modes (total, partial, non-residue), where each shines, and how to test them before rolling out at scale.
What “tamper-evident” actually means
Tamper-evident labels (also called security seals) are designed to show visible damage or a hidden message when someone tries to peel, slit, or re-stick them. The point isn’t to be unbreakable; it’s to make tampering hard to hide. These seals work on cases, cartons, access panels, electronics, documents, and containers—anywhere you need a quick “opened/not opened” signal.
How hologram security labels create evidence
Most tamper-evident holograms use a metallized polyester (PET) face with a diffractive image (the hologram). Under the face is an engineered release layer and pressure-sensitive adhesive. When you remove the label, that release layer fractures in a controlled way, revealing a pattern or destroying the facestock so the label can’t be reapplied cleanly. The holographic surface adds visibility and makes counterfeiting harder.
Transfer modes: total, partial, and non-residue
These are the three big categories. Knowing them saves you from sticky cleanup or weak signaling.
- Total transfer (residue): On removal, the hidden pattern (often “VOID” or honeycomb) transfers to the surface and stays there. This is the loudest signal and ideal for carton flaps, box seams, and metal cases where residue is fine and clarity matters.
- Partial transfer: The message splits—some on the surface, some on the label. It still signals tampering, but cleanup is easier than total transfer. Good for packaging that will be discarded.
- Non-residue (no transfer): The pattern appears in the label film itself while the surface stays clean. This is best for doors, windows, access panels, and assets where you can’t leave adhesive behind.
Pattern types: VOID, honeycomb, checkerboard, and custom
The pattern is the “receipt” that something happened. You’ll see several common styles:
- VOID / OPENED VOID: The most recognized message. Clear for audits and easy to explain to staff.
- Honeycomb: A hex pattern left in residue or visible in the torn film. It’s highly recognizable and hard to realign if someone tries to stick the label back.
- Checkerboard / dots / triangles: These geometric patterns work like VOID. They’re often used when you don’t want readable text on the surface.
- Custom reveal: Your logo or agency name appears on removal (with or without residue). This adds brand control and makes replacement with commodity labels obvious.
Materials: PET, ultra-destructible films, and fragile paper
Not all tamper seals fail the same way. The facestock material controls the “how.”
- Holographic PET (polyester): The workhorse for security holograms. Durable face, crisp imaging, and predictable transfer behavior. Available in total, partial, and non-residue constructions.
- Ultra-destructible vinyl (UDV): Brittle film that fractures into tiny shards if lifted. It’s hard to remove in one piece, so attempts are obvious. Great for curved or textured surfaces where transfer patterns might not form cleanly.
- Fragile paper (a.k.a. eggshell paper): Paper engineered to break into flakes when peeled. It’s cheap, one-time-use, and very hard to remove cleanly. Good for warranty dots and asset IDs, but not weatherproof. If you need outdoor durability, use UDV or PET with laminate instead.
Serial numbers, barcodes, and data capture
Hologram seals can carry unique IDs, consecutive serials, and even barcodes or QR codes. That lets you log chain-of-custody, track lots, and pair a specific seal to a specific asset. In practice, serials make audits faster: if seal 0417 was signed out to a technician and later shows up broken, you’re not guessing who touched what.
Adhesive and surface fit
A seal is only as good as its bond. For most work, choose permanent acrylic adhesives—they stick to painted metal, glass, and many plastics. On low-surface-energy plastics (polypropylene, polyethylene), look for adhesives rated for LSE. If you’re sealing powder-coated parts or textured plastics, ask for a grade designed for rough or pebbled surfaces. For non-residue labels on sensitive panels, use products specifically marketed as non-transfer or clean-removal; they’re formulated to show evidence without gumming up the surface.
When to use each type
Use total-transfer VOID or honeycomb when you want unmistakable, lingering proof—shipping cartons, storage bins, equipment cases, and archive boxes.
Use non-residue on assets you’ll keep using—doors, access panels, rental gear, aircraft hatches, and electronics. You want clear evidence without scraping adhesive.
Use fragile paper or ultra-destructible films for warranty dots, screws, or curved housings. Their job is to tear, not transfer a message. They’re also useful where geometry or texture prevents clean residue patterns.
Use custom-reveal patterns when brand control matters or when you need to prove a seal came from you (agencies, labs, and regulated supply chains).
Quick selection guide
- Surface: clean metal/glass → any; textured/LSE plastics → LSE-rated adhesive or destructible film; sensitive surfaces → non-residue.
- Environment: outdoors or abrasion → PET hologram with laminate; indoor only → fragile paper is fine.
- Signal style: readable message → VOID; visual only → honeycomb/geometry; brand-specific → custom reveal.
- Cleanup tolerance: okay with residue → total transfer; prefer clean → non-residue; can’t form patterns → fragile/UDV.
- Tracking: add serial numbers or barcodes for audits.
Printing and application tips
- Design high-contrast. Black or white text over hologram backgrounds reads best. Avoid tiny details.
- Mind barcodes. Test scans over reflective films. If in doubt, place the code in a non-holographic panel.
- Round the corners. Rounded shapes resist edge lift.
- Apply pressure. Firm pressure helps adhesive wet-out. Wait 24 hours before testing removal.
- Document your lot. Record product type, serial range, and where you used each batch. It helps with investigations.
How to test before rollout
Run a small pilot on each surface you care about:
- Apply one total-transfer and one non-residue label to each surface.
- Wait 24 hours. Attempt removal and record the result (message clarity, bond strength, cleanup).
- Try a slit test with a utility blade to simulate “open then reseal.” See which labels self-destruct or show a broken seal.
- For fragile paper or UDV, check how thoroughly they break and how long removal takes.
- Temperature cycle one set (hot/cold) to surface-test edge lift.
Ethics and legality
Use tamper-evident holograms to protect your own inventory, documents, and equipment—or to meet compliance requirements. Do not use them to impersonate brands, forge official markings, or mislead consumers. If you work in a regulated space (healthcare, government, aviation), follow your labeling standards and record-keeping rules.
Bottom line
Pick the transfer mode first (total, partial, non-residue). Then pick the pattern (VOID, honeycomb, or custom) and material (PET, ultra-destructible film, or fragile paper) that fits your surface and environment. Pilot a few options, keep notes, and standardize what works. Tamper-evident holograms are simple tools. If you match them to the job, they make your security checks faster and clearer.
