EAS


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

EAS

(Electronic Article Surveillance) A security system for preventing theft in retail stores that uses disposable label tags or reusable hard tags attached to the merchandise. An alarm is triggered when walking through detection pedestals at the store exit if a disposable tag was not deactivated or a reusable tag was not removed at the checkout counter. Also called "single bit RFID tags" because the tag is either on or off, the primary EAS technologies are radio frequency (RF), acousto-magnetic (AM) and electromagnetic (EM).

Radio Frequency (RF)
Looking somewhat like RFID tags, RF EAS tags comprise an inductor (coil) and capacitor in series. The transmitting pedestal sends out an RF signal, which causes the activated tag to resonate, and the phase difference of the signals is detected at the receiving pedestal. RF systems that transmit a range of frequencies to accommodate different labels are called "swept RF." To deactivate disposable RF tags, the tag is waved over a high energy transmitter at the checkout counter that blows a built-in fuse and partially destroys the capacitor. See RFID.

Acousto-Magnetic (AM)
AM tags are made of two strips of metal that are magnetized for activation. The transmitter pedestal sends out 58 kHz pulses, which cause the metal to oscillate. The receiving pedestal detects a tag when the transmitter is in between pulses, but a signal is still resonating from the tag. To deactivate disposable AM tags, the tag is demagnetized at the checkout counter.

Electromagnetic (EM)
Widely used in Europe and around the world, EM tags have a metal strip or wire that is demagnetized for activation. A low-frequency alternating current is transmitted from the pedestal, and the tag generates harmonic frequencies that are picked up by the receiver using signal processing. To deactivate disposable EM tags, the tag is magnetized at the checkout counter, exactly the opposite of the AM tags.


The Detection Zone
EAS pedestals pick up activated tags in their detection zone. Signals from the transmitting pedestal are re-radiated by the tag to the receiving pedestal. Although the pedestals serve as a warning, transmitters and receivers can also be hidden in exits. Some systems can use only one pedestal to transmit and receive. (Top image courtesy of Checkpoint Systems, Inc., www.checkpointsystems.com)


The Detection Zone
EAS pedestals pick up activated tags in their detection zone. Signals from the transmitting pedestal are re-radiated by the tag to the receiving pedestal. Although the pedestals serve as a warning, transmitters and receivers can also be hidden in exits. Some systems can use only one pedestal to transmit and receive. (Top image courtesy of Checkpoint Systems, Inc., www.checkpointsystems.com)







Soft and Hard Tags
Disposable RF tags can be concealed within ordinary labels, such as the price label and innocuous shopping cart label in the top image. Reusable hard tags (bottom) must be removed by the clerk at the checkout counter. (Images courtesy of Checkpoint Systems, Inc., www.checkpointsystems.com)


Soft and Hard Tags
Disposable RF tags can be concealed within ordinary labels, such as the price label and innocuous shopping cart label in the top image. Reusable hard tags (bottom) must be removed by the clerk at the checkout counter. (Images courtesy of Checkpoint Systems, Inc., www.checkpointsystems.com)
References in periodicals archive ?
0 standard by groups like AWARN, the DASDEC's new EAS-Net AEA feature will enable next-level urgent communications from stations to audiences -- with text, graphics, audio, and other advanced multimedia features -- that provide a more interactive way of communicating emergency information that goes far beyond basic EAS.
Khaled Al Mehairbi, Senior Vice President and General Manager of Etihad Airport Services Ground, said: "These appointments illustrate EAS Ground's commitment to Emiratisation and reinforce the strong structure we have for the future.
It strives to strengthen global norms and universally-recognized values with the ASEAN as the driving force working in partnership with the other participants of the EAS.
EAS is currently the only entity in which the company reports a noncontrolling interest for financial statement purposes.
Rand Secure Archive's EWA tool was developed specifically to enable secure and easy access to EAS data via a remote web application until a move to a more comprehensive data archiving platform is feasible.
EAS also works alongside the local security forces and police in managing the whole of the Grand Prix accreditation project for the track.
Although the EAS test will be initiated by FEMA, the FCC is telling local governments they can use the test as an opportunity to work with local broadcasters and cable providers to educate appropriate government officials and staff about the EAS, such as how it works and when it should be activated.
Global giants SAP, Oracle, and Microsoft Dynamics dominate the MENA region's EAS market.
The sources said the prime minister of Vietnam, as chair of ASEAN and the EAS, will, after the Hanoi meeting, write the leaders of the United States and Russia to inform them about the decision to invite them to join the EAS as members in 2011.
2013: EAS fully operational; target date for reaching full staff with optimum balance of nationalities, and coming from the Commission, Council Secretariat and member states
The EAS, which has been initiated by the Association of Southeast Asian Nations, involves not only the 10 ASEAN member countries, Japan, China and South Korea but also India, Australia and New Zealand, which are not regarded as East Asian.
EAS and Walker claim over 1000 global plastics installations of the EAS Walker Pressmag magnetic-platen technology.