Security labels are specialized labels designed to help detect unauthorized opening, removal, substitution or counterfeiting. Depending on the construction, a security label may reveal a VOID message, break into fragments, leave residue, show holographic authentication features or combine tamper evidence with serial numbers, barcodes and QR codes.
For B2B buyers, however, selecting a security label is not simply a matter of choosing the strongest adhesive or the most visible design. The correct solution depends on the required tamper response, application surface, printing process, label construction and final use environment.
Quick answer: use VOID labels when visible removal evidence is required, destructible labels when the label must physically break during removal, hologram security labels when visual authentication is important, and application-specific warranty labels when unauthorized repair or component replacement must be detected.
Security Labels: Quick Selection Guide
| Security Label Type | Primary Security Function | Typical Tamper Response | Common Applications |
|---|---|---|---|
| VOID Security Labels | Visible removal evidence | VOID, OPENED or custom message appears after removal | Electronics, packaging, assets, warranty sealing |
| Destructible Security Labels | Prevent clean removal and reuse | Facestock fractures or fragments during removal | Warranty seals, electronics, machinery, assets |
| Hologram Security Labels | Visual authentication and anti-counterfeit protection | Holographic security feature plus optional VOID or destructible response | Cosmetics, electronics, certificates, branded packaging |
| Paper Security Labels | Tamper evidence for paper-based packaging | VOID transfer, fiber tear or controlled paper damage | Cartons, mailers, sustainable packaging |
| Serialized Security Labels | Identification and traceability | Unique serial number, barcode or QR combined with physical security | Logistics, assets, authentication and inventory control |
| Warranty Security Labels | Warranty control and unauthorized-access evidence | VOID activation, fragmentation or another visible tamper response | Electronics, machinery, devices and service-access points |
What Are Security Labels?
A security label is an adhesive label engineered to provide one or more security functions beyond ordinary product identification.
For many packaging, electronics and warranty applications, tamper evident security labels are selected specifically to create visible evidence of unauthorized opening, removal or manipulation.
These functions can include visible tamper evidence, anti-removal protection, anti-counterfeit authentication, traceability or controlled one-time use.
Unlike an ordinary sticker, a security label may contain engineered release layers, fragile facestock, holographic structures, specialized pressure-sensitive adhesive, hidden messages or variable identification data.
For a deeper explanation of how these layers interact, see Hanksec’s Security Label Material Systems Guide.
What Are Security Labels Used For?
Security labels are used when a product, package, component or document must show evidence of unauthorized access or substitution.
Typical applications include electronics warranty control, retail packaging, logistics cartons, cosmetics, pharmaceutical secondary packaging, asset protection, confidential documents, authentication labels and high-value products.
The security requirement varies by application. A smartphone warranty seal may need clean-surface tamper evidence, while a shipping carton may require permanent residue and a highly visible VOID message.
Main Types of Security Labels
There is no single security-label construction suitable for every application. The following categories solve different tamper and authentication problems.
VOID Security Labels
VOID labels use an engineered separation structure that reveals a hidden VOID, OPENED or custom security message after removal.
Depending on the construction, the security message may transfer completely to the application surface, appear partly on both surfaces, or remain primarily within the label.
The three common constructions are full transfer, partial transfer and non-transfer.
Buyers comparing these structures can review Hanksec’s Tamper Evident VOID Label Materials.
Destructible Security Labels
Destructible labels are engineered so that the facestock breaks, fractures or fragments when someone attempts to remove the label.
The adhesive bond and facestock strength must be balanced correctly. If the adhesive is too weak for the application surface, the complete label may lift instead of breaking.
Different destructibility levels may also be required according to printing, die cutting, matrix stripping and application requirements.
For detailed material selection, see Hanksec’s Destructible Label Material Rolls Selection Guide.
Hologram Security Labels
Hologram security labels add a visible optical authentication feature to a security label.
They can be produced with custom holographic patterns, logos, serial numbers, QR codes, barcodes and optional tamper-evident constructions such as VOID or destructible structures.
Holographic appearance should not be treated as tamper evidence by itself. When removal evidence is also required, the holographic feature should be combined with a suitable adhesive and security construction.
Hanksec provides Hologram Security Labels and Seals for brand-protection and packaging applications.
Paper Security Labels
Paper security labels are designed for projects where tamper evidence needs to be better aligned with fiber-based cartons, mailers and recyclability-oriented paper packaging systems. Depending on the construction, they may use engineered VOID transfer, delamination or fiber-tear mechanisms while reducing reliance on conventional plastic facestocks.
Material compatibility should still be evaluated as a complete label system, including the adhesive, coating, security layer and release liner.
For detailed material and recyclability considerations, buyers can review Hanksec’s Paper VOID Labels Guide.
Serialized Security Labels
Serialized security labels combine physical tamper-evident features with unique identification data such as serial numbers, barcodes or QR codes.
The physical security layer helps reveal unauthorized removal or manipulation, while the variable data can support identification, authentication, inventory control and supply-chain traceability.
Where security labels include barcodes, QR codes or serialized identification, globally standardized identification and data structures can support traceability across supply chains. See GS1 standards for identification and barcodes.
Warranty Security Labels
Warranty labels are commonly used on electronics, machinery and high-value products to show whether a product has been opened, repaired or disassembled without authorization.
A warranty label is an application category rather than one specific material type. Depending on the surface and required evidence, the construction may use non-transfer VOID film, destructible material, holographic security material or another tamper-evident design.
For sensitive electronics surfaces, buyers should pay particular attention to adhesive compatibility and the amount of residue that can be accepted after removal.
Tamper Evident Labels vs Tamper Proof Labels
The terms tamper evident label and tamper proof label are often used interchangeably in purchasing searches, but they do not mean exactly the same thing.
A tamper-evident security label is designed to make interference visible. It may reveal a message, leave residue, fracture or show permanent physical damage.
The phrase “tamper proof” is commonly used commercially, but no pressure-sensitive security label should be assumed to make tampering physically impossible under every condition.
For professional specification, the more useful question is:
What evidence should the label create when someone attempts to remove or manipulate it?
Security Label Materials
Security label materials may use PET film, paper-based facestock, destructible film, holographic film or other specialty constructions depending on the required security function.
Material selection should consider more than the face material alone. The complete system can include:
- printable facestock or top coating;
- security release or separation layer;
- hidden VOID or OPENED message;
- pressure-sensitive adhesive;
- release liner;
- holographic or functional security features.
Printing compatibility should also be confirmed according to the actual printing technology. Buyers using UV, flexographic, thermal-transfer, digital or pigment-inkjet printing can review Hanksec’s Printable Security Label Materials Guide.
How Do Security Labels Work?
Security labels work by creating a controlled and irreversible response when removal or manipulation occurs.
In a VOID construction, internal layers separate according to a pre-engineered pattern. In a destructible construction, the facestock fails before the adhesive bond releases completely. In a holographic system, optical security features help users recognize and authenticate the original label.
The effectiveness of any system depends on the interaction between facestock + security layer + adhesive + application surface + dwell conditions.
How to Choose Security Labels
Before requesting samples or quotations, buyers should first define the required security response and actual application conditions.
| Buyer Should Confirm | Examples |
|---|---|
| Required Tamper Evidence | Full-transfer VOID / Partial-transfer / Non-transfer / Destructible |
| Application Surface | PP / PE / PET / Glass / Metal / Coated Carton |
| Residue Requirement | Strong visible residue / Partial residue / Cleaner surface |
| Printing Method | UV / Flexo / Thermal Transfer / Digital / Inkjet |
| Security Features | VOID message / Hologram / UV / Serial Number / Barcode / QR |
| Supply Format | Jumbo Roll / Slit Roll / Sheet / Finished Labels |
| Application Environment | Indoor / Outdoor / Heat / Cold / Humidity / Chemical Exposure |
Adhesive selection should always be evaluated using the actual application substrate. Different plastics, glass, coated cartons and painted surfaces can produce very different bonding behavior.
As a first-party application example, Hanksec has documented how low-surface-energy PE and PP-based substrates can change VOID-label adhesion and tamper response. The case demonstrates why security-label selection should be validated on the actual production surface rather than relying only on a generic adhesive specification.
For substrate and adhesive qualification, see the Tamper Evident Label Adhesive Guide.
For broader self-adhesive label testing and qualification references, converters can also consult the FINAT Technical Handbook.
Security Labels for Electronics
Electronics are one of the most common applications for security labels because manufacturers need to control warranty fraud, unauthorized repair, component replacement and device access.
Typical solutions include non-transfer VOID labels for cleaner surfaces, destructible warranty labels for anti-removal protection and hologram security labels for authentication.
The final label should be tested on the actual housing material because ABS, PC, painted metal, glass and other surfaces can require different adhesive constructions.
Security Labels for Packaging
Packaging applications often require highly visible tamper evidence that can be inspected quickly during shipping, retail or receiving.
Full-transfer and partial-transfer VOID labels are commonly considered when residue on cartons or packaging is acceptable. Paper-based security labels may also be evaluated where the security system needs to better match paper-based packaging.
For packaging projects, buyers should also consider label placement, carton coating, package surface texture and whether automated labeling equipment will be used.
Custom Security Labels for Label Converters
Label converters may purchase security label materials rather than finished labels so printing, die cutting and variable data can be completed in-house.
Typical supply options can include jumbo rolls, slit rolls, sheets and converter-ready materials.
Converter-ready security labels may also require machine-specific liner and sensing features. As a first-party application example, Hanksec has documented security labels using black registration marks on the release liner to support gap sensing, label positioning and printer recognition during automated printing and labeling. See Hanksec’s security-label printer recognition example on LinkedIn.
Customization may involve:
- custom VOID, OPENED or logo security messages;
- full, partial or non-transfer structures;
- facestock color and appearance;
- adhesive construction;
- release liner;
- printable coating;
- holographic effects;
- barcode, QR code and serial-number requirements.
Material samples should be qualified using the buyer’s actual printing, converting and application conditions before bulk production.
How to Evaluate a Security Label Manufacturer
A security label manufacturer should be evaluated on more than price or the appearance of a single sample.
Buyers should confirm whether the supplier can provide stable security construction, repeatable tamper response, adhesive matching, printing compatibility, roll-format control, OEM customization, sample support and technical documentation.
For material buyers and label converters, consistency between sample approval and bulk production is particularly important because variation in coating, release behavior or adhesive can change the final tamper response.
Security Label FAQ
What is the best type of security label?
There is no single best security label. VOID labels are suitable when visible removal evidence is required, destructible labels are useful when the label must break during removal, and holographic labels are useful where visual authentication is also required.
What is the difference between a VOID label and a destructible label?
A VOID label reveals an engineered hidden message after removal. A destructible label is designed to physically fracture or fragment when someone attempts to remove it.
Do security labels always leave adhesive residue?
No. Full-transfer, partial-transfer and non-transfer constructions produce different residue behavior. The correct type should be selected according to the application surface and the required tamper evidence.
Can security labels be customized with a logo or QR code?
Yes. Depending on the construction and printing process, security labels can be customized with logos, VOID patterns, QR codes, barcodes, serial numbers, warning text and other authentication features.
Should security labels be tested before bulk production?
Yes. Sample testing should use the actual application substrate and, where relevant, the real printing and converting process. The test should confirm adhesion, tamper response, residue behavior, printing performance and final application suitability.
Request Security Label Samples & Material Recommendations
Send Hanksec your application surface, required tamper response, label size, printing method, residue requirement, estimated quantity and supply format.
Hanksec can evaluate suitable VOID, destructible, holographic and custom security label constructions before bulk production.
