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WO2012007775A1 - Appareil de commande d'accès électronique - Google Patents

Appareil de commande d'accès électronique Download PDF

Info

Publication number
WO2012007775A1
WO2012007775A1 PCT/HU2011/000064 HU2011000064W WO2012007775A1 WO 2012007775 A1 WO2012007775 A1 WO 2012007775A1 HU 2011000064 W HU2011000064 W HU 2011000064W WO 2012007775 A1 WO2012007775 A1 WO 2012007775A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
key unit
generating means
pressure
key
Prior art date
Application number
PCT/HU2011/000064
Other languages
English (en)
Inventor
Vilmos Orcifalvi
Original Assignee
Vilmos Orcifalvi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vilmos Orcifalvi filed Critical Vilmos Orcifalvi
Publication of WO2012007775A1 publication Critical patent/WO2012007775A1/fr

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00944—Details of construction or manufacture
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • E05B49/002—Keys with mechanical characteristics, e.g. notches, perforations, opaque marks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B51/00—Operating or controlling locks or other fastening devices by other non-mechanical means
    • E05B51/02—Operating or controlling locks or other fastening devices by other non-mechanical means by pneumatic or hydraulic means
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00761—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by connected means, e.g. mechanical contacts, plugs, connectors
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00944—Details of construction or manufacture
    • G07C2009/0096—Electronic keys comprising a non-biometric sensor
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00968—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys shape of the data carrier
    • G07C2009/00992—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys shape of the data carrier mechanical key
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks

Definitions

  • the invention relates to an apparatus providing for electronically controlled access, comprising a key unit and a receiver unit, at least one pressure generating means located in said key unit, and at least one pressure sensor located in said receiver unit and on inserting the key unit in the receiver unit, receiving and temporarily connecting to the at least one pressure generating mean of key unit and determining the current pressure value of said inserted pressure generating means, and an electronic unit including memory means, a processor and possessing processing functions, said electronic unit is con- nected to said receiver unit.
  • HU 223698 Bl discloses an apparatus providing for electronically controlled access and a key containing a pressure code, said key being provided on one or both sides with pressure generating means components, each of which can generate pressure conforming to one of a given number of pressure values in the pressure sensor(s) located in the house which hosts the key.
  • the number of combinations associated with the key is determined by the number of the pressure generating means components and the number of the possible discrete pressure values of a pressure generating means.
  • One limit to that solution is that if the key is possessed, even temporarily, by an unauthorised person, the pressure values of the pressure generating means can be retrieved by putting the key into the house comprising pressure evaluating means, and it is possible (albeit not simple) to copy the key, that is, to make another key with pressure generating means creating similar pressure values.
  • the objective of the present invention is to create an upgraded access apparatus in which the limits referred to above manifest themselves much less markedly, that is, the key unit cannot be copied and, furthermore, the number of possible combinations is much higher than in the case of the HU document referred to above.
  • an apparatus providing for electronically controlled access, comprising a key unit and a receiver unit, at least one pressure generating means located in said key unit, and at least one pressure sensor located in said receiver unit and on inserting the key unit in the receiver unit, receiving and temporarily connecting to the at least one pressure generating mean of key unit and determining the current pressure value of said inserted pressure generating means, and an electronic unit including memory means, a processor and possessing processing functions, said electronic unit is connected to said receiver unit.
  • the apparatus is characterised in that said at least one pressure generating means in the key unit and said at least one pressure sensor in the receiver unit are arranged in a common plane which is perpendicular or nearly perpendicular to the direction of insertion of the key unit into the receiver unit, where the at least one pressure generating means is in operational relationship with each of the at least one pressure sensor along a line of operation which is parallel with the direction of insertion of the key unit into the receiver unit or encloses an angle of less than 90° with it, and if several pressure generating means are present, the pressure generating means are arranged in a plane which is perpendicular or nearly perpendicular to the direction of insertion of the key unit into the receiver unit, and the pressure generating means are arranged rotated by a pre-determined angle relative to one another around the longitudinal axis of key unit, and if several pressure sensors are present, the pressure sensors are arranged in a plane which is perpendicular or nearly perpendicular to the di- rection of insertion of the key unit into the
  • the apparatus (preferably both the key unit and the re- ceiver unit, but at least one of the two) has several pressure sensors, the sensing sensitivity of which are set at different levels to render copying more difficult and to enhance the number of combinations.
  • the number of combinations as well as security are multiplied if the apparatus com- prises a random-number generator associated with the individual pressure sensors, the current values of which are associated in the period of pressure sensing with the memory registry receiving the discrete data of the given pressure sensor, and the electronic unit performs a predetermined operation on the sensed pressure values and the random number generator values associated with them, and the outputs of the individual opera- tions are stored separated or stacked in the memories of both electronic units.
  • the cheapest and satisfactory solution is a random number generator which is a clock signal generator.
  • that should have a daily repetition cycle and produce at least one clock signal per second.
  • Multiple assignment (that is, of several key units to one receiver unit and/or several receiver units to one key unit) can be realised if at least a code identifying the key unit is recorded in the memory of the electronic unit of the key, and on the occasion of the first authorisation, as part of the authorisation conditions, the receiver unit stores also the identifier code of the key unit, and the receiver units also have identifier codes, stored in the memories of the authorised key units.
  • Fig. 1 is a schematic representation of the key unit and the receiver unit of the ap- paratus according to the invention in perspective view;
  • Fig. 2 shows the view of the end of the key according to Fig. 1 on the side of the receiver unit;
  • Fig. 3 shows the differently designed end of the key according to Fig. 1 on the side of the receiver unit
  • Fig. 4 is the view of the receiver unit of the apparatus from the direction of the placement of the key unit
  • Fig. 5 is the view of the differently designed receiver unit of the apparatus from the direction of the placement of the key unit.
  • Fig. 1 is a schematic representation of key unit 10 of the apparatus according to the in- vention, the design of which resembles in many respects the key represented in Figures 1 and 2 of HU 223698 referred to above.
  • Key unit 10 comprises a body part 1 and a head part 2.
  • key unit 10 comprising a body part 1 and a head part 2 is a key unit 10 which is not unusually designed, but in an unusual way, its components necessary for the operation of the apparatus are arranged or designed not in the longitudinal direction of body part 1 but, as shown in Figures 2 and 3, at end surface 3 of the body part 1 facing receiver unit 20. Within this end surface 3, at least one and preferably several pressure generating means 4 are arranged, each of which provides stochastic and discrete pressure values different from one another.
  • receiver unit 20 comprises channel 21, with pressure sensors 23 arranged in its bottom 22 boundary surface.
  • the pressure sensors may be located, as appropriate, in boundary surface 22, in a number and layout identical with that of pressure generating means 4 of key unit 10, but as will be obvious to those skilled in the art, the alteration of the number and layout of pressure generating means 4 and pressure sensors 23 provides an uncountable number of variations.
  • body part 1 and on receiver unit 20 which may be mechanical markings or colour codes. It is possible to place several 5 markings on body part 1, as the case may be, with which the user can provide for the adequate code sequence during the "training" and use of the key.
  • Pressure sensors 23 may be of the same form or may have different mechanical dimensions, design and electronic parameters each. This is taken into consideration as an individual characteristic by the apparatus at the time of the "training" of the key ever, which makes it impossible for unauthorised persons to copy the key.
  • the pressure components are made up partly of pressure generating means 4 and partly of pressure sensors 23, so that every key unit 10 comprises at least one pressure sensor 23 and one pressure generating means 4.
  • an electronic unit preferably a microcontroller, an RFID chip, or a combination of the two is placed, which has a memory of a given size and artificial intelligence. If the electronic unit can establish contactless information exchange through electro- magnetic coupling with an external unit in its environment, not outlined in the drawing, then key unit 10 can also be made without contact, but the solution whereas the connection of the electronic unit is made possible by contact or contacts formed on a suitable part of body part 10 is simpler.
  • the size and external appearance of pressure generating means 4 and pressure sensors 23 are identical. This concealed design implies extra cost.
  • Pressure generating means 4 and pressure sensors 23 of a similar key unit 10 may be of different size and design, with no protective concealing used there.
  • the design of pressure generating means 4 is preferably identical with or highly similar to the one disclosed in the Hungarian patent referred to above.
  • Pressure sensors 23 are, for example, devices functioning on the basis of the piezoelectric or some other principle and producing analogue voltage signals under the effect of pressure, applied also in the house of the above-indicated Hungarian patent.
  • the outlets of pres- sure sensors 23 are connected to the contacts directly or with the insertion of the electronic.
  • Figures 4 and 5 show the schematic front view of receiver unit 20 receiving key unit 10 outlined in Figures 1-3 and establishing mechanical and electronic contact with it.
  • 21 key channel is formed for the key unit 10 or its body part 1 , into which body part 1 and the pressure generating means 4 located on it can be inserted.
  • At the appropriate place in the house there are contacts which connect to the contacts of key unit 10 when the latter is in inserted state.
  • receiver-side electronic units not shown in the Figures are located, the design of which is highly similar to that of the receiver-side units described in the prior art referred to above, with the differences outlined below.
  • the two units of the apparatus according to the invention that is, key unit 10 and receiver unit 20 can be fitted into one another, and the criterion of authorisation is that on the occasion of the first fitting, the typical conditions of the connection must be written into the memory contained in receiver unit 20, and upon the subsequent re-insertion of key unit 10, following the checking of the given conditions, it is sufficient to check whether the value or values recorded in advance are received again.
  • pressure generating means and pressure sensors in key unit 10 and receiver unit 20 are not located on the cylindrical or lateral surface, but at the end surfaces and the internal boundary surfaces.
  • Each of pressure generating means 4a in component series 3 of key 10 can produce any of the pre-set number of k of pressure values.
  • Pressure sensor or pressure sensors 15b in receiver unit 20 receive the pressure signals of the inserted pressure gen- erating means 4a in the same order and produce at their outlet a signal series corresponding to the sensed pressure, the said signal series being available after appropriate segmentation and processing in a stored way, preferably in digital format.
  • key-side pressure sensor 4b senses also the pressure signals of pressure generating means 15a built into receiver unit 20, and a similar discrete voltage signal or its digital representation appears in it or in them.
  • the signal produced by pressure sensor 4b can be connected to the electronic unit in receiver unit 20 directly, via the 6 -16 contact pairs, but it is more advantageous to process and store in digital format the pressure signals sensed in key unit 10 after processing in key-side electronic unit 5.
  • the electronic units of the two sides are interconnected and transfer to each other the pieces of information stored in them.
  • a figure or other quantity representing the entire set is generated from the combined information as structured data set, and this figure is stored in both electronic units.
  • the number of pressure generating means and pressure sensors in key unit 10 and in receiver unit 20, respectively, has also been increased, and hence the number of possible combinations has multiplied as well.
  • a possible way of the further enhancement of security is to shift the discrete sensing bands of the applied pressure sensors relative to one another by one or several discrete steps. This means that, if connected to the same pressure generating means as the first one, the second pressure sensor, thus designed to be of different sensitivity, would sense discrete signals which differ according to the extent of the shift.
  • the number of elements within component series 3 is eight.
  • the individual components are pressure generating means 4 or pressure sensors 23, as measurement and assignment take place when body part 1 is inserted in key hole 13, and connection is established between contacts 6 and 16.
  • the pressure value of each pressure generating means is measured by the pressure sensor facing it.
  • the number of components may be much higher if measurement and assignment take place during the insertion of body part 1, when several pressure generating means pass one after the other in front of each pressure sensor, which indicate the pressure signal of the same pressure generating means as different values due to the different de- fault setting (sensitivity) of the individual pressure sensors.
  • Assignment is the result of the assignment of a clock signal independent of the pressure measurement or the current value of a random number generator expressed by a variable u(i) function is assigned to the numerical value of n(i).
  • the assignment may be any mathematical operation; let us choose now one of the simplest: multiplication.
  • E (n) 8.
  • Assignment here means that every pressure value being measured is multiplied by the clock signal available at the time of the appearance of that value.
  • the number of clock signal generators is identical to the number of components, that is, it is 8, and the initial time of each of the eight clock signal generators is independent of those of the others.
  • This assignment-based coding can be conceived of as if, during shopping, we calculated the price of the individual items by using automatic scales, and the resulting prices were added up by the cashier. For every item, we put on the scales the given cold meat or fruits, set the given unit price on the scales, depending on the nature of the item concerned, and the scales displays and prints in bar code the price of the item after multiplying the measured weight with the unit price which is different by item. At the cash desk, the prices of the eight items are added up. In our case, weight corresponds to the measured pressure value and the price to the clock generator value.
  • the memory of key unit 10 comprises an identifier code typical of key unit 10 and, upon utilisation, the sys- tem first performs a simple check of the identifier codes, and access is then based on the stored values selected after the identification of key unit 10 and receiver unit 20 assigned to one another.
  • a single key unit 10 may also be used with several reception units 20; the number of the possibilities is limited by the capacity of the memories alone.
  • the advantage of the solution proposed by the invention is that both the measurement and the operations to be performed are simple; the processing and storing demand does not exceed the possibilities of simple microcontrollers.
  • the result is nevertheless unbelievably good, since the value range is an astronomical figure, and the falsifier gets no possibility of merit through the incidental unauthorised reading of key unit 10, since it can be excluded that, in addition to key unit 10, he would also obtain access to the memory in receiver unit 20 and the characteristics of the pressure generating means- pressure sensor pairs.
  • the invention shall not be limited to any of its applications or embodiments, but its essence is such a association of key unit 10 and receiver unit 20 as will satisfy the enhanced security conditions described above.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L'invention porte sur un appareil permettant un accès à commande électronique, lequel appareil comprend une unité de clé (10) et une unité de récepteur (20), au moins un moyen de génération de pression (4) localisé dans ladite unité de clé (10), et au moins un capteur de pression (23) localisé dans ladite unité de récepteur (20) et lors de l'introduction de l'unité de clé (10) dans l'unité de récepteur (20), la réception et la connexion temporaire à l'au moins un moyen de génération de pression (4) de l'unité de clé (10) et la détermination de la valeur de pression courante dudit moyen de génération de pression introduit (4), comprenant en outre une unité électronique comprenant des moyens de mémoire, un processeur possédant des fonctions de traitement, ladite unité électronique étant connectée à ladite unité de récepteur (20). Ledit au moins un moyen de génération de pression (4) dans l'unité de clé (10) et ledit au moins un capteur de pression (23) dans l'unité de récepteur (20) sont agencés dans un plan commun qui est perpendiculaire ou presque perpendiculaire à la direction d'introduction de l'unité clé (10) dans l'unité de récepteur (20), l'au moins un moyen de génération de pression (4) étant en relation fonctionnelle avec chacun de l'au moins un capteur de pression (23) le long d'une ligne de fonctionnement qui est parallèle à la direction d'introduction de l'unité clé (10) dans l'unité de récepteur (20) ou forme un angle de moins de 90° avec elle, et si plusieurs moyens de génération de pression (4) sont présents, les moyens de génération de pression (4) sont agencés dans un plan qui est perpendiculaire ou presque perpendiculaire à la direction d'introduction de l'unité de clé (10) dans l'unité de récepteur (20), et les moyens de génération de pression (4) sont agencés tournés d'un angle prédéterminé les uns par rapport aux autres autour de l'axe longitudinal de l'unité de clé (10), et si plusieurs capteurs de pression (23) sont présents, les capteurs de pression (23) sont agencés dans un plan qui est perpendiculaire ou presque perpendiculaire à la direction d'introduction de l'unité de clé (10) dans l'unité de récepteur (20), et les capteurs de pression (23) sont tournés dans l'unité de récepteur (20) d'un angle prédéterminé les uns par rapport aux autres autour de l'axe longitudinal de l'unité de clé (10).
PCT/HU2011/000064 2010-07-12 2011-07-08 Appareil de commande d'accès électronique WO2012007775A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU1000360A HUP1000360D0 (en) 2010-07-12 2010-07-12 Electronically controlled device for acces ensuring
HUP1000360 2010-07-12

Publications (1)

Publication Number Publication Date
WO2012007775A1 true WO2012007775A1 (fr) 2012-01-19

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ID=45468981

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Application Number Title Priority Date Filing Date
PCT/HU2011/000064 WO2012007775A1 (fr) 2010-07-12 2011-07-08 Appareil de commande d'accès électronique

Country Status (2)

Country Link
HU (1) HUP1000360D0 (fr)
WO (1) WO2012007775A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8860574B2 (en) 2011-09-29 2014-10-14 Invue Security Products Inc. Cabinet lock for use with programmable electronic key
US8994497B2 (en) 2012-05-21 2015-03-31 Invue Security Products Inc. Cabinet lock key with audio indicators
US9171441B2 (en) 2005-12-23 2015-10-27 Invue Security Products Inc. Programmable security system and method for protecting merchandise

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334396A2 (fr) * 1986-02-28 1989-09-27 Aug. Winkhaus GmbH & Co. KG Dispositif de fermeture
DE19907654A1 (de) * 1999-02-23 2000-08-24 Wilka Schliestechnik Gmbh Schließzylinder mit elektromagnetisch betätigbarem Sperrstift
US20040239479A1 (en) * 2001-07-02 2004-12-02 Vilmos Orcifalvi Electronically tested high-security coding and decoding device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334396A2 (fr) * 1986-02-28 1989-09-27 Aug. Winkhaus GmbH & Co. KG Dispositif de fermeture
DE19907654A1 (de) * 1999-02-23 2000-08-24 Wilka Schliestechnik Gmbh Schließzylinder mit elektromagnetisch betätigbarem Sperrstift
US20040239479A1 (en) * 2001-07-02 2004-12-02 Vilmos Orcifalvi Electronically tested high-security coding and decoding device
HU223698B1 (hu) 2001-07-02 2004-12-28 Vilmos Orczifalvi Elektronikusan vezérelt hozzáférést biztosító berendezés és ehhez tartozó nyomáskódot tartalmazó kulcs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9171441B2 (en) 2005-12-23 2015-10-27 Invue Security Products Inc. Programmable security system and method for protecting merchandise
US9501913B2 (en) 2005-12-23 2016-11-22 Invue Security Products Inc. Programmable security system and method for protecting merchandise
US8860574B2 (en) 2011-09-29 2014-10-14 Invue Security Products Inc. Cabinet lock for use with programmable electronic key
US11885155B2 (en) 2011-09-29 2024-01-30 Invue Security Products, Inc. Cabinet lock for use with programmable electronic key
US8994497B2 (en) 2012-05-21 2015-03-31 Invue Security Products Inc. Cabinet lock key with audio indicators

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