EM Tattle-tape Library Security Technology

EM electromagnetic library systems also commonly referred to as the '3M tattle-tape system', is an old library security system still found in a reducing number of school libraries. We now consider RFID the industry standard for new library systems and so we no longer offer EM to prospective clients.

For schools needing to replace their aging 3M tattle-tape machine we highly recommend you consider our D-Tech RFIQ™ system which was designed as a more affordable, reliable and future-proof RFID based replacement.

Sensitiser / Desensitiser Units

EM Spinal Deactivation / Reactivation Units

Sensitiser / desensitser devices are required with EM systems to switch the security tags ON and OFF when items are issued or returned. These units work on the chip strip (or slug strip) which include the following system brands Checkpoint, Meto, Knogo, Sensormatic, Dialog, Certus, Gateway, and more.

RFID systems now use a Staffpad Station which integrates with the issues/returns computer to change the security and settings of the equivalent RFID tag. It is also smaller and can be mounted under the issues/return counter for 'out-of-sight' operation.

EM Security Tags / Tattle-tape Strips

Library Plus can still support libraries with these systems with a reduced range of EM labels / tags / tattle-tape security strips / spinal labels compatible with a range of systems. View our range of tags.

EM Security Gates

3M tattle-tape library security gatesIt's a fact that EM security gates are more problematic, costly, and require substantially more ongoing maintenance than our current RFID security gates. We have a range of reliable, effective, and affordable tailor-made security gate solutions to fit your budget and requirements.

EM Self Service Kiosks

EM kiosks come with an integrated deactivation and reactivation device which allows library users to check out items themselves without staff assistance. These have now been replaced with RFID self-service kiosks for a more reliable system and increased functionality.


Contact us. We are happy to discuss any questions you may have.

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Innovative Library Technology
26 Longwood Place, Forrest Hill, Auckland, New Zealand


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Call 09 410 6590


Official D-Tech Agent for New Zealand