FR2676570A1 - Anti-theft system with secured unlocking, intended more particularly for objects capable of being pierced through without damage - Google Patents

Abstract

Anti-theft system with secured unlocking, intended more particularly for objects capable of being pierced through without damage consisting of a plurality of labels (1) to be fastened to each object and of at least one archway triggering an audio and/or light signal if one of the said labels (1) passes through it. Each label (1) includes means (4) for unlocking the pin (5) fastening it to the object, which are linked to a logic unit (2), and the said unlocking means (4) of the said pin (5) are actuated by the logic unit (2) only after insertion of the said label (1) into a reader (6), the sending to the said reader (6) of a certain amount of information and the reception by the logic unit (2) of a converted reception acknowledgement for the data sent.

Description

The anti-theft devices have multiplied and consist, most often, of a system triggering an audible and light signal if an protected item crosses a gate illegally.

The device consists of a radio transmitter attached to the gate and called a "fixed device", the article to be protected being secured by a system called a "mobile device" and incorporating a circuit (antenna) which reacts near the transmitter .

We can distinguish two types of circuits - one, disposable, which will be stuck on articles such as discs, books, etc ..., - tm. recoverable, consisting of a system often incorporating a dome and
a ciou which can be dissociated thanks to an ad-hoc acting device. the
more often. using magnets. This device is very often used
to protect textile-type items (clothing, etc.). Sad-
The latter has the disadvantage of being able to be neutralized by the
staff.

it is enough to put the protection system in the device which makes it possible to release the nail and thus to pass the gates of detection without obstacle.

Likewise, it is relatively easy to handcraft a device that allows the nail to be detached. Third, this type of protection is completely anonymous. .x, -with the neighbor's device, everyone can neutralize the protections and free, as they please, the nails from the protective domes.

The invention described below overcomes these drawbacks. The device consists of a detection system conforming to the existing system, but the detachment system is contained in the anti-theft label and this can only be activated by means of an implanted micro-circuit, too. , on the label. said micro-chip incorporating the parameters of the product to be protected.

Before giving the order to separate, the micro-circuit will first, using an ad-hoc reader, inform the IT department that the sale has taken place. In practice, the seller no longer has to enter data (reference, price, etc.) on the keyboard. but only to introduce the system which can be a card into a slot designed for this purpose: the reader will read the data stored in the micro-circuit, the cash register will record the said data and display the price.

 The parameters of this transaction are then directed to the IT department, which will be responsible for the various management tasks (stocks, statistics, etc.).

 In addition, the system may require the seller to personalize each transaction, that is, to type their personal code using a keyboard or to use a specific key, a card magnetic card or memory card assigned to each seller.

 In this way. no product can be released illegally with the complicity of a seller or a malicious person attached to the company.

 A particular embodiment of the invention will now be described by way of nonlimiting example.

Figure 1: Overview of the device
In FIG. 1 we can see the label (1) in which the logic unit (2) is integrated, said unit being connected to the unlocking means (4) of the fixing nail (5). These unlocking means can, for example. consist of a monostable pulling electromagnet,
We can also see the reader (6) in which each label must be inserted to allow unlocking. Said reader comprises a keyboard (7) and a screen (8) on which the information of the transaction in progress can be written.

 The programming of each label can be carried out by the reader (6) but also by a programmer independent of said reader. Furthermore. each logical unit (2) has a state memory which informs the reader of the last operations carried out.

 Of course, an antenna (9) is embedded in the body of each label (I) to allow the triggering of alarms when one of these labels passes through a security gate.

Claims (8)

 1 - Anti-theft system with secure unlocking, more particularly intended for  objects which can be pierced without damage. made up of a  plurality of labels (1) to be secured to each object to be protected and at least  minus a gantry triggering an audible and / or luminous signal if one  said labels (I) pass through it: characterized in that each  label (1) comprises means (4) for unlocking the nail (5)  joining the object. connected to a logic unit (2), and that said  unlocking means' 4) of said nail (5) are not actuated by the unit  logic (2), only after the insertion of said label (I) in a  reader (6). sending to said reader (6) a certain number  of information and the receipt by the logic unit (2) of an acknowledgment of  reception. transformed sent data. 2 - Secure unlocking anti-theft system according to claim 1  characterized by the fact that each seller must be identified by the  reader (6) before a request to unlink a label (1).  each seller.  keyboard (7) or the use of a specific key or card  this identification can be the entry of a secret code using the 3 - Anti-theft system with secure unlocking according to claims I and 2  characterized in that sending information to the reader (6)  contains the code of the protected object and can therefore be used for invoicing  and inventory management. 4 - Anti-theft system with secure unlocking according to claims I, 2 and 3  characterized in that each label (1) is identified by a  number, said number is engraved on said label (1) and stored in memory  permanently in the logical unit (2). 5 - Anti-theft system with secure unlocking according to claim 4,  characterized by the fact that the number of said label (I) is sent  to the reader (6) during each transaction. 6 - Anti-theft system with secure unlocking according to claims 1. 2. 3.  and, in particular, the code of the object to be protected.  the useful information in the logical unit (2) of each label (1)  4 and 5, characterized in that the reader (6) allows programming 7 - Anti-theft system with secure unlocking according to claim 6.  a micro-circuit card.  protected by the prior entry of a code or the use of a key or  characterized in that the programming of the labels (1) is 8 - Anti-theft system with secure unlocking according to claims 1. 2. 3,  4, 5. 6 and 7, characterized in that each logical unit (2)  has a specific memory area in which are contained  information relating to the last transactions carried out.