Tamper Evident Labels
Tamper evident labels show evidence of tampering by leaving a message
on the surface that it is removed from. The words "VOID" or
"OPENED" appear when the label is removed. It is used to indicate
to the authorized user of the product that the product has been tampered
with prior to the user receiving it. It is also used to discourage unauthorized
transfer or theft of company assets, such as computer hardware and other
equipment. The label cannot be replaced without indication that it was
tampered with. Tamper evident labels can be ordered with a custom message
if you have a special phrase that you would like to show when the label
is tampered with.
Another version of the tamper evident label is a cut and reseal label.
This label has the same tamper evident feature, where if the label is
pull up from the surface it is adhered to it will leave a message on the
surface, but it also has an additional feature. If the labels is slit
to try to gain access without pulling up the label, and then resealed,
the message will not immediately appear but will appear after one hour.
Tamper evident labels work well on the seal of small containers and packages
and as labels identifying parts and equipment. They help to protect against
tampering and theft. Some of the products that benefit from this type
of security label are pharmaceuticals, electronic equipment, inventory
security, baby food, retail products and other security sensitive applications.
Destructible labels are made of a highly destructible material that tears
very easily. The labels are impossible to remove and replace in one piece.
Attempts to remove result in the label flaking off in pieces. Tampering
is easily detected. They protect against tampering, theft and unauthorized
transfer of company property. They are also used on pharmaceutical products
and other security related items.
Destructible labels are available with serialized numbering or you can
get them unnumbered and number them yourself using a permanent marker.
Bar code labels are also available as a destructible labels for items
that you want marked with bar code numbering.
Holograms are a good security provider for labels. They can be added
to most any type of labels. They guard against forgery because they cannot
be copied successfully and they are very difficult to duplicate. Holograms
are used to add security to a product and for promotional purposes. For
more details on holograms, see Security
- Design Features or Finishing
- Foil Stamping - Holograms.
Some of the markets that use the hologram as a security option are pharmaceutical,
retail, credit cards, identification cards, certificates and negotiable
documents. Holograms are available in standard designs and can also be
special ordered with a custom design.
Security Bar Codes
A security bar code label cannot be copied by a copier. The background
of the label is a black laminate that has been printed black in a dye
based ink, which will not absorb infrared light. The laminate is bonded
to the bar code which is printed on a film label with a carbon based ink
which will absorb infrared light. When viewing the bar code area, you
will not physically see the bar code on the laminated label, but the infrared
scanner will be able to read the carbon based ink since it absorbs light.
The bar code will appear black to the scanner and the background will
appear white. Security bar codes are used on employee identification cards
and security badges.
Thermochromatic ink can be used on labels that are attached to products
that must be kept at a predetermined temperature or needs to be kept in
a controlled environment. The label can indicate to the consumer if the
product has been handled properly. The label will show a particular shade
of gray or color as proof that the proper temperature was maintained.
Electronic Article Surveillance (EAS) Labels
EAS labels are used as anti-theft devices. The label is used along with
EAS detection equipment to detect if an item is being removed without
authorization. The EAS systems are used in stores, data centers and libraries.
The label is applied to an item and if the label has not been properly
deactivated it will set off an alarm when passing through the electronic
surveillance detector. When the item is purchased or checked out, the
label is made inactive by the use of a deactivation device. Once the label
is deactivated it is referred to as a "dead label". Labels that
have not been deactivated are referred to as "live labels".
There are several different types of technologies used for EAS labels.
The most common types are AM (Acousto-Magnetic), EM (electro-magnetic),
and RF (Radio Frequency). AM EAS systems use a transmitter to create a
detection field. If the label is not deactivated properly, an alarm will
go off when the item containing the EAS label passes through the detection
field. With the EM EAS system, a low frequency electro-magnetic field
is created to form the detection field. RF EAS systems use radio frequency
to create the detection field. Each of the EAS systems has its own detection
equipment that must be used to allow the system to work properly.
The EAS labels and EAS systems work well to provide protection against
theft and eliminate the need to protect high price items behind locked
doors and in locked cases. This allows the consumer to examine the product
more closely before purchasing.
Microscopic Tracer Particles
Microscopic tracer particles are molecules that can be coded in a unique
sequence for your specific application. They can be incorporated into
the paper or film that you are going to use for your labels. They are
used for authentication purposes. The authenticity of the label is verified
by the use of a electronic reader. The use of microscopic tracer particles
provides a high level of security but can be an expensive option. The
reader alone costs over $5000.